:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;

  /* Background color tokens (Light Mode) */
  --color-bg-1: rgba(59, 130, 246, 0.08); /* Light blue */
  --color-bg-2: rgba(245, 158, 11, 0.08); /* Light yellow */
  --color-bg-3: rgba(34, 197, 94, 0.08); /* Light green */
  --color-bg-4: rgba(239, 68, 68, 0.08); /* Light red */
  --color-bg-5: rgba(147, 51, 234, 0.08); /* Light purple */
  --color-bg-6: rgba(249, 115, 22, 0.08); /* Light orange */
  --color-bg-7: rgba(236, 72, 153, 0.08); /* Light pink */
  --color-bg-8: rgba(6, 182, 212, 0.08); /* Light cyan */

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --color-select-caret: rgba(var(--color-slate-900-rgb), 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for opacity control */
  --color-success-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Spacing */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
  :root {
    /* RGB versions for opacity control (Dark Mode) */
    --color-gray-400-rgb: 119, 124, 124;
    --color-teal-300-rgb: 50, 184, 198;
    --color-gray-300-rgb: 167, 169, 169;
    --color-gray-200-rgb: 245, 245, 245;

    /* Background color tokens (Dark Mode) */
    --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
    --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
    --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
    --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
    --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
    --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
    --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
    --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */

    /* Semantic Color Tokens (Dark Mode) */
    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
      inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    --button-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

    /* Common style patterns - updated for dark mode */
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
    --status-bg-opacity: 0.15;
    --status-border-opacity: 0.25;
    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

    /* RGB versions for dark mode */
    --color-success-rgb: var(--color-teal-300-rgb);
    --color-error-rgb: var(--color-red-400-rgb);
    --color-warning-rgb: var(--color-orange-400-rgb);
    --color-info-rgb: var(--color-gray-300-rgb);
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  /* RGB versions for opacity control (dark mode) */
  --color-gray-400-rgb: 119, 124, 124;
  --color-teal-300-rgb: 50, 184, 198;
  --color-gray-300-rgb: 167, 169, 169;
  --color-gray-200-rgb: 245, 245, 245;

  /* Colorful background palette - Dark Mode */
  --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
  --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
  --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
  --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
  --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
  --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
  --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
  --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */

  /* Semantic Color Tokens (Dark Mode) */
  --color-background: var(--color-charcoal-700);
  --color-surface: var(--color-charcoal-800);
  --color-text: var(--color-gray-200);
  --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
  --color-primary: var(--color-teal-300);
  --color-primary-hover: var(--color-teal-400);
  --color-primary-active: var(--color-teal-800);
  --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
  --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
  --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
  --color-border: rgba(var(--color-gray-400-rgb), 0.3);
  --color-error: var(--color-red-400);
  --color-success: var(--color-teal-300);
  --color-warning: var(--color-orange-400);
  --color-info: var(--color-gray-300);
  --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
  --color-btn-primary-text: var(--color-slate-900);
  --color-card-border: rgba(var(--color-gray-400-rgb), 0.15);
  --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);
  --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
  --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

  /* Common style patterns - updated for dark mode */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for dark mode */
  --color-success-rgb: var(--color-teal-300-rgb);
  --color-error-rgb: var(--color-red-400-rgb);
  --color-warning-rgb: var(--color-orange-400-rgb);
  --color-info-rgb: var(--color-gray-300-rgb);
}

[data-color-scheme="light"] {
  /* RGB versions for opacity control (light mode) */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);

  /* RGB versions for light mode */
  --color-success-rgb: var(--color-teal-500-rgb);
  --color-error-rgb: var(--color-red-500-rgb);
  --color-warning-rgb: var(--color-orange-500-rgb);
  --color-info-rgb: var(--color-slate-500-rgb);
}

/* Base styles */
html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}
h5 {
  font-size: var(--font-size-lg);
}
h6 {
  font-size: var(--font-size-md);
}

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

a:hover {
  color: var(--color-primary-hover);
}

code,
pre {
  font-family: var(--font-family-mono);
  font-size: calc(var(--font-size-base) * 0.95);
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
}

code {
  padding: var(--space-1) var(--space-4);
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  border: none;
  text-decoration: none;
  position: relative;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
}

.btn--primary:active {
  background: var(--color-primary-active);
}

.btn--secondary {
  background: var(--color-secondary);
  color: var(--color-text);
}

.btn--secondary:hover {
  background: var(--color-secondary-hover);
}

.btn--secondary:active {
  background: var(--color-secondary-active);
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn--outline:hover {
  background: var(--color-secondary);
}

.btn--sm {
  padding: var(--space-4) var(--space-12);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: var(--space-10) var(--space-20);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-md);
}

.btn--full-width {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Form elements */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-8) var(--space-12);
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

textarea.form-control {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
}

select.form-control {
  padding: var(--space-8) var(--space-12);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
  background-size: 16px;
  padding-right: var(--space-32);
}

/* Add a dark mode specific caret */
@media (prefers-color-scheme: dark) {
  select.form-control {
    background-image: var(--select-caret-dark);
  }
}

/* Also handle data-color-scheme */
[data-color-scheme="dark"] select.form-control {
  background-image: var(--select-caret-dark);
}

[data-color-scheme="light"] select.form-control {
  background-image: var(--select-caret-light);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: var(--focus-outline);
}

.form-label {
  display: block;
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.form-group {
  margin-bottom: var(--space-16);
}

/* Card component */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--duration-normal) var(--ease-standard);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__body {
  padding: var(--space-16);
}

.card__header,
.card__footer {
  padding: var(--space-16);
  border-bottom: 1px solid var(--color-card-border-inner);
}

/* Status indicators - simplified with CSS variables */
.status {
  display: inline-flex;
  align-items: center;
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.status--success {
  background-color: rgba(
    var(--color-success-rgb, 33, 128, 141),
    var(--status-bg-opacity)
  );
  color: var(--color-success);
  border: 1px solid
    rgba(var(--color-success-rgb, 33, 128, 141), var(--status-border-opacity));
}

.status--error {
  background-color: rgba(
    var(--color-error-rgb, 192, 21, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-error);
  border: 1px solid
    rgba(var(--color-error-rgb, 192, 21, 47), var(--status-border-opacity));
}

.status--warning {
  background-color: rgba(
    var(--color-warning-rgb, 168, 75, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-warning);
  border: 1px solid
    rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-border-opacity));
}

.status--info {
  background-color: rgba(
    var(--color-info-rgb, 98, 108, 113),
    var(--status-bg-opacity)
  );
  color: var(--color-info);
  border: 1px solid
    rgba(var(--color-info-rgb, 98, 108, 113), var(--status-border-opacity));
}

/* Container layout */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--space-16);
  padding-left: var(--space-16);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}
@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}
@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
  }
}
@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

/* Utility classes */
.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-4 {
  gap: var(--space-4);
}
.gap-8 {
  gap: var(--space-8);
}
.gap-16 {
  gap: var(--space-16);
}

.m-0 {
  margin: 0;
}
.mt-8 {
  margin-top: var(--space-8);
}
.mb-8 {
  margin-bottom: var(--space-8);
}
.mx-8 {
  margin-left: var(--space-8);
  margin-right: var(--space-8);
}
.my-8 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
}

.p-0 {
  padding: 0;
}
.py-8 {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}
.px-8 {
  padding-left: var(--space-8);
  padding-right: var(--space-8);
}
.py-16 {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}
.px-16 {
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

.block {
  display: block;
}
.hidden {
  display: none;
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* Dark mode specifics */
[data-color-scheme="dark"] .btn--outline {
  border: 1px solid var(--color-border-secondary);
}

@font-face {
  font-family: "FKGroteskNeue";
  src: url("https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2")
    format("woff2");
}

/* Results and analysis styles */
.results-analysis {
  max-width: 100%;
}

.performance-comparison {
  margin-bottom: 2rem;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.result-card {
  border: 2px solid;
  border-radius: 12px;
  padding: 1.5rem;
  background: linear-gradient(145deg, #f8f9fa, #e9ecef);
  transition: all 0.3s ease;
}

.result-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.baseline-model {
  border-color: #dc3545;
  background: linear-gradient(145deg, #fff5f5, #fee);
}

.improved-model {
  border-color: #28a745;
  background: linear-gradient(145deg, #f8fff8, #efe);
}

.transfer-model {
  border-color: #ffc107;
  background: linear-gradient(145deg, #fffbf0, #fef7e0);
}

.result-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  padding-bottom: 0.5rem;
}

.result-icon {
  font-size: 1.5rem;
}

.result-header h4 {
  margin: 0;
  font-size: 1.1rem;
}

.metrics {
  margin: 1rem 0;
}

.metric {
  display: flex;
  justify-content: space-between;
  margin: 0.5rem 0;
  padding: 0.3rem 0;
  border-bottom: 1px dotted rgba(0, 0, 0, 0.2);
}

.metric-label {
  font-weight: 500;
}

.metric-value {
  font-weight: bold;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.metric-value.error {
  background: #dc3545;
  color: white;
}

.metric-value.warning {
  background: #ffc107;
  color: #212529;
}

.metric-value.good {
  background: #28a745;
  color: white;
}

.metric-value.excellent {
  background: #007bff;
  color: white;
}

.result-problems h5,
.result-improvements h5,
.result-benefits h5 {
  margin: 1rem 0 0.5rem 0;
  font-size: 0.9rem;
}

.result-problems ul,
.result-improvements ul,
.result-benefits ul {
  margin: 0;
  padding-left: 1rem;
}

.result-problems li {
  color: #dc3545;
  margin: 0.2rem 0;
}

.result-improvements li {
  color: #28a745;
  margin: 0.2rem 0;
}

.result-benefits li {
  color: #007bff;
  margin: 0.2rem 0;
}

.detailed-analysis {
  margin: 2rem 0;
  padding: 1.5rem;
  background: linear-gradient(145deg, #f8f9fa, #e9ecef);
  border-radius: 12px;
}

.analysis-sections {
  display: grid;
  gap: 1.5rem;
  margin-top: 1rem;
}

.analysis-section {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  background: white;
  border-radius: 8px;
  border-left: 4px solid #007bff;
}

.section-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.section-content h4 {
  margin: 0 0 0.5rem 0;
  color: #007bff;
}

.time-comparison {
  margin-top: 0.5rem;
}

.time-item {
  margin: 0.3rem 0;
  padding: 0.3rem 0.5rem;
  background: #f8f9fa;
  border-radius: 4px;
  font-family: monospace;
}

.confusion-matrix {
  margin: 2rem 0;
  padding: 1.5rem;
  background: linear-gradient(145deg, #fff, #f8f9fa);
  border-radius: 12px;
  border: 1px solid #dee2e6;
}

.matrix-container {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
}

.matrix {
  display: grid;
  grid-template-columns: 120px 120px 120px;
  grid-template-rows: 40px 60px 60px;
  gap: 2px;
  background: #dee2e6;
  border-radius: 8px;
  overflow: hidden;
}

.matrix-header {
  display: contents;
}

.matrix-row {
  display: contents;
}

.header-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #6c757d;
  color: white;
  font-weight: bold;
  font-size: 0.8rem;
  text-align: center;
  padding: 0.5rem;
}

.header-cell.predicted {
  background: #007bff;
}

.header-cell.actual {
  background: #28a745;
}

.cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: white;
  font-weight: bold;
  text-align: center;
  padding: 0.5rem;
}

.true-positive {
  background: #d4edda !important;
  color: #155724;
}

.true-negative {
  background: #d4edda !important;
  color: #155724;
}

.false-positive {
  background: #f8d7da !important;
  color: #721c24;
}

.false-negative {
  background: #f8d7da !important;
  color: #721c24;
}

.matrix-metrics {
  min-width: 200px;
}

.matrix-metric {
  margin: 1rem 0;
  padding: 0.5rem;
  background: #f8f9fa;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.9rem;
}

.key-learnings {
  margin: 2rem 0;
}

.learning-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.learning-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.5rem;
  background: linear-gradient(145deg, #fff, #f8f9fa);
  border-radius: 12px;
  border: 2px solid #e9ecef;
  transition: all 0.3s ease;
}

.learning-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
  border-color: #007bff;
}

.learning-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.learning-card h4 {
  margin: 0 0 0.5rem 0;
  color: #007bff;
  font-size: 1rem;
}

.learning-card p {
  margin: 0;
  font-size: 0.9rem;
  color: #6c757d;
}

.final-model-summary {
  margin-top: 2rem;
  padding: 1.5rem;
  background: linear-gradient(145deg, #e3f2fd, #bbdefb);
  border-radius: 12px;
  border-left: 5px solid #2196f3;
}

.final-model-summary .highlight {
  margin: 0;
  font-size: 1.1rem;
  color: #1976d2;
}

@media (max-width: 768px) {
  .results-grid {
    grid-template-columns: 1fr;
  }

  .matrix-container {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .matrix {
    grid-template-columns: 80px 80px 80px;
    grid-template-rows: 30px 50px 50px;
  }

  .learning-cards {
    grid-template-columns: 1fr;
  }
}

/* Enhanced Header Styles */
.presentation-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 0.8rem 1.5rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left,
.header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.presentation-title {
  font-weight: 600;
  font-size: 1.1rem;
  margin-left: 0.5rem;
}

.header-btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  padding: 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.progress-bar-container {
  width: 200px;
  height: 4px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
  overflow: hidden;
  margin-right: 1rem;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #4caf50, #81c784);
  transition: width 0.3s ease;
  border-radius: 2px;
}

/* Side Menu Styles */
.side-menu {
  position: fixed;
  top: 0;
  left: -350px;
  width: 350px;
  height: 100vh;
  background: #f8f9fa;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
  transition: left 0.3s ease;
  z-index: 200;
  overflow-y: auto;
}

.side-menu.active {
  left: 0;
}

.menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 1rem 1.5rem;
}

.menu-header h3 {
  margin: 0;
  font-size: 1.1rem;
}

.menu-close-btn {
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.menu-close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.menu-sections {
  padding: 1rem 0;
}

.menu-section {
  margin-bottom: 1.5rem;
}

.menu-section h4 {
  margin: 0 0 0.5rem 0;
  padding: 0 1.5rem;
  color: #495057;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.menu-item {
  display: block;
  color: #343a40;
  text-decoration: none;
  padding: 0.6rem 1.5rem;
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
}

.menu-item:hover {
  background: #e9ecef;
  border-left-color: #007bff;
  padding-left: 2rem;
}

.menu-item.active {
  background: #e3f2fd;
  border-left-color: #2196f3;
  color: #1976d2;
  font-weight: 500;
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 300;
  backdrop-filter: blur(3px);
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: white;
  border-radius: 12px;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid #e9ecef;
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
}

.modal-header h3 {
  margin: 0;
  color: #343a40;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #6c757d;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.modal-close:hover {
  background: rgba(0, 0, 0, 0.1);
}

.modal-body {
  padding: 1.5rem;
}

.help-section {
  margin-bottom: 2rem;
}

.help-section h4 {
  margin: 0 0 1rem 0;
  color: #495057;
  border-bottom: 2px solid #e9ecef;
  padding-bottom: 0.5rem;
}

.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.8rem;
}

.shortcut-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.5rem;
  background: #f8f9fa;
  border-radius: 6px;
}

.shortcut-item kbd {
  background: #343a40;
  color: white;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.8rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.help-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.help-list li {
  padding: 0.5rem 0;
  border-bottom: 1px dotted #dee2e6;
}

.help-list li:last-child {
  border-bottom: none;
}

/* Settings Styles */
.setting-group {
  margin-bottom: 2rem;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 8px;
}

.setting-group h4 {
  margin: 0 0 1rem 0;
  color: #495057;
}

.setting-item {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.setting-item:last-child {
  margin-bottom: 0;
}

.setting-item label {
  font-weight: 500;
  color: #495057;
  min-width: 150px;
}

.setting-item input[type="range"] {
  flex: 1;
}

.setting-item select {
  min-width: 150px;
  padding: 0.3rem 0.5rem;
  border: 1px solid #ced4da;
  border-radius: 4px;
}

.action-btn {
  background: #007bff;
  color: white;
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.2s ease;
}

.action-btn:hover {
  background: #0056b3;
}

/* Enhanced Navigation Footer */
.presentation-footer {
  background: #f8f9fa;
  padding: 1rem 1.5rem;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  bottom: 0;
  z-index: 50;
}

.navigation-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-btn--first,
.nav-btn--last {
  background: #6c757d;
  padding: 0.5rem;
  min-width: 40px;
}

.nav-btn--first:hover,
.nav-btn--last:hover {
  background: #545b62;
}

.slide-timer {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  color: #6c757d;
  font-size: 0.9rem;
}

/* Context Menu */
.context-menu {
  position: absolute;
  background: white;
  border: 1px solid #dee2e6;
  border-radius: 6px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  padding: 0.5rem 0;
  min-width: 180px;
  z-index: 400;
}

.context-menu .menu-item {
  padding: 0.6rem 1rem;
  cursor: pointer;
  color: #343a40;
  display: flex;
  align-items: center;
  border: none;
  background: none;
}

.context-menu .menu-item:hover {
  background: #f8f9fa;
}

.context-menu hr {
  margin: 0.5rem 0;
  border: none;
  border-top: 1px solid #e9ecef;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 500;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: #333;
  color: white;
  padding: 0.8rem 1.2rem;
  border-radius: 6px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  animation: toastSlideIn 0.3s ease;
  max-width: 300px;
}

.toast--success {
  background: #28a745;
}

.toast--error {
  background: #dc3545;
}

.toast--warning {
  background: #ffc107;
  color: #212529;
}

.toast--fade-out {
  animation: toastSlideOut 0.3s ease forwards;
}

@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toastSlideOut {
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* Loading Indicator */
.loading-indicator {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  z-index: 600;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem auto;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Accessibility and Theme Support */
[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #e9ecef;
  --border-color: #495057;
}

[data-theme="high-contrast"] {
  --bg-color: #000;
  --text-color: #fff;
  --border-color: #fff;
}

.high-contrast * {
  border-color: var(--border-color) !important;
  color: var(--text-color) !important;
}

.reduced-motion * {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .presentation-header {
    padding: 0.5rem 1rem;
  }

  .header-left .presentation-title {
    display: none;
  }

  .progress-bar-container {
    width: 100px;
  }

  .side-menu {
    width: 100%;
    left: -100%;
  }

  .modal-content {
    width: 95%;
    margin: 1rem;
  }

  .shortcuts-grid {
    grid-template-columns: 1fr;
  }

  .navigation-controls {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-left,
  .nav-right {
    order: 2;
  }

  .nav-center {
    order: 1;
  }
}

/* Print Styles */
@media print {
  .presentation-header,
  .presentation-footer,
  .side-menu,
  .modal-overlay,
  .context-menu,
  .toast-container {
    display: none !important;
  }

  .slide {
    page-break-after: always;
    box-shadow: none !important;
  }

  body {
    background: white !important;
  }
}

/* Conclusion slide styles */
.conclusion-container {
  max-width: 100%;
  padding: 1rem 0;
}

.project-summary {
  margin-bottom: 2rem;
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.achievement-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  border-radius: 12px;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.achievement-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.achievement-card.success {
  background: linear-gradient(145deg, #d4edda, #c3e6cb);
  border-color: #28a745;
}

.achievement-card.efficiency {
  background: linear-gradient(145deg, #cce5ff, #b3d9ff);
  border-color: #007bff;
}

.achievement-card.learning {
  background: linear-gradient(145deg, #fff3cd, #ffeaa7);
  border-color: #ffc107;
}

.achievement-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.achievement-content h3 {
  margin: 0 0 0.5rem 0;
  color: #2c3e50;
  font-size: 1.2rem;
}

.achievement-content p {
  margin: 0 0 1rem 0;
  color: #34495e;
  line-height: 1.4;
}

.achievement-details {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.detail-tag {
  background: rgba(0, 0, 0, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: bold;
}

.key-learnings-final {
  margin: 2rem 0;
  padding: 1.5rem;
  background: linear-gradient(145deg, #f8f9fa, #e9ecef);
  border-radius: 12px;
}

.learnings-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.learning-category {
  background: white;
  border-radius: 8px;
  padding: 1.5rem;
  border-left: 4px solid #007bff;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid #e9ecef;
  padding-bottom: 0.5rem;
}

.category-icon {
  font-size: 1.5rem;
}

.category-header h3 {
  margin: 0;
  color: #007bff;
}

.learning-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.learning-list li {
  margin: 0.8rem 0;
  padding: 0.5rem 0;
  border-bottom: 1px dotted rgba(0, 0, 0, 0.1);
  line-height: 1.4;
}

.learning-list li:last-child {
  border-bottom: none;
}

.next-steps {
  margin: 2rem 0;
}

.steps-timeline {
  display: grid;
  gap: 1.5rem;
  margin-top: 1rem;
}

.step-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  border-radius: 12px;
  border-left: 5px solid;
  transition: all 0.3s ease;
}

.step-item:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.step-item.immediate {
  background: linear-gradient(145deg, #fff5f5, #ffe6e6);
  border-color: #dc3545;
}

.step-item.short-term {
  background: linear-gradient(145deg, #fff8e1, #ffecb3);
  border-color: #ff9800;
}

.step-item.long-term {
  background: linear-gradient(145deg, #e8f5e8, #d4edda);
  border-color: #28a745;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: #007bff;
  color: white;
  border-radius: 50%;
  font-weight: bold;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.step-content h3 {
  margin: 0 0 0.5rem 0;
  color: #2c3e50;
}

.step-content ul {
  margin: 0.5rem 0;
  padding-left: 1rem;
}

.step-content li {
  margin: 0.3rem 0;
  color: #34495e;
}

.step-timeline {
  margin-top: 1rem;
  font-weight: bold;
  color: #6c757d;
  font-size: 0.9rem;
}

.practical-applications {
  margin: 2rem 0;
}

.applications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.application-item {
  text-align: center;
  padding: 1.5rem;
  background: linear-gradient(145deg, #fff, #f8f9fa);
  border-radius: 12px;
  border: 2px solid #e9ecef;
  transition: all 0.3s ease;
}

.application-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  border-color: #007bff;
}

.app-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
}

.application-item h3 {
  margin: 0 0 0.5rem 0;
  color: #2c3e50;
}

.application-item p {
  margin: 0 0 1rem 0;
  color: #6c757d;
  font-size: 0.9rem;
  line-height: 1.4;
}

.app-tech {
  background: #e3f2fd;
  color: #1976d2;
  padding: 0.3rem 0.8rem;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: bold;
  display: inline-block;
}

.professor-section {
  margin-top: 3rem;
  padding: 2rem;
  background: linear-gradient(145deg, #f8f9fa, #e9ecef);
  border-radius: 15px;
}

.final-message {
  text-align: center;
  margin: 2rem 0;
  padding: 2rem;
  background: linear-gradient(145deg, #e3f2fd, #bbdefb);
  border-radius: 12px;
  border: 2px solid #2196f3;
}

.message-content h2 {
  margin: 0 0 1rem 0;
  color: #1976d2;
  font-size: 1.8rem;
}

.message-content p {
  margin: 1rem 0;
  color: #1565c0;
  font-size: 1.1rem;
  line-height: 1.5;
}

.next-challenge {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  font-size: 1rem;
  color: #0d47a1;
}

@media (max-width: 768px) {
  .achievements-grid,
  .learnings-categories,
  .applications-grid {
    grid-template-columns: 1fr;
  }

  .achievement-card {
    flex-direction: column;
    text-align: center;
  }

  .step-item {
    flex-direction: column;
  }

  .step-number {
    align-self: flex-start;
  }
}

/* Educational Enhancement Styles */

/* Welcome Overlay */
.welcome-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10001;
  animation: fadeIn 0.5s ease-out;
}

.welcome-content {
  background: var(--color-surface);
  padding: var(--space-32);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  max-width: 500px;
  text-align: center;
  border: 2px solid var(--color-primary);
}

.welcome-content h2 {
  color: var(--color-primary);
  margin-bottom: var(--space-20);
}

.welcome-features {
  list-style: none;
  padding: 0;
  text-align: left;
  margin: var(--space-20) 0;
}

.welcome-features li {
  background: var(--color-bg-1);
  padding: var(--space-8) var(--space-12);
  margin-bottom: var(--space-8);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

.welcome-tips {
  background: var(--color-bg-3);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-base);
  margin: var(--space-16) 0;
  border: 1px solid rgba(var(--color-success-rgb), 0.3);
}

.welcome-close {
  margin-top: var(--space-16);
  padding: var(--space-12) var(--space-24);
  font-size: var(--font-size-lg);
}

/* Section Indicators */
.section-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin-left: var(--space-16);
  background: rgba(var(--color-surface-rgb, 255, 255, 253), 0.1);
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  backdrop-filter: blur(5px);
}

.section-name {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

.section-progress {
  background: rgba(var(--color-text-rgb, 245, 245, 245), 0.2);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* Educational Tooltips */
.educational-tooltip {
  position: fixed;
  top: 80px;
  right: 20px;
  background: var(--color-success);
  color: var(--color-btn-primary-text);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  max-width: 300px;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Enhanced animations for educational flow */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOutRight {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100px);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* Enhanced focus indicators for accessibility */
.slide:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Improved button accessibility */
.nav-btn:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 2px;
}

/* Enhanced dot indicators for better visibility */
.dot:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Screen reader improvements */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Educational progress indicators */
.progress-visual {
  position: relative;
  width: 100%;
  height: 4px;
  background: rgba(var(--color-primary-rgb), 0.2);
  border-radius: var(--radius-full);
  margin-top: var(--space-8);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 0.3s var(--ease-standard);
}

/* Enhanced presentation mode for education */
.presentation-mode {
  cursor: none;
}

.presentation-mode .educational-tooltip {
  display: none;
}

.presentation-mode .section-indicator {
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.presentation-mode:hover .section-indicator {
  opacity: 1;
}

/* Mobile optimizations for educational content */
@media (max-width: 768px) {
  .welcome-content {
    padding: var(--space-20);
    margin: var(--space-16);
  }

  .section-indicator {
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-6) var(--space-12);
  }

  .educational-tooltip {
    top: 60px;
    right: 10px;
    left: 10px;
    max-width: none;
    text-align: center;
  }
}

/* High contrast mode support for accessibility */
@media (prefers-contrast: high) {
  .welcome-content {
    border-width: 3px;
  }

  .educational-tooltip {
    border: 2px solid var(--color-text);
  }

  .section-indicator {
    border: 1px solid var(--color-text);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .educational-tooltip {
    animation: none !important;
  }

  .slide.active .journey-step,
  .slide.active .vision-step,
  .slide.active .advantage-item,
  .slide.active .filter-type {
    animation: none !important;
  }

  .welcome-overlay {
    animation: none !important;
  }
}

/* Print optimizations for educational materials */
@media print {
  .welcome-overlay,
  .educational-tooltip,
  .section-indicator {
    display: none !important;
  }

  .slide-content h1 {
    color: black !important;
  }

  .slide-content {
    color: black !important;
  }

  .highlight,
  .key-insight {
    background: #f0f0f0 !important;
    color: black !important;
    border: 1px solid #ccc !important;
  }
}

/* Enhanced concept container styles with better visual hierarchy */
.concept-container {
  text-align: left;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.concept-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: -20px;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  border-radius: var(--radius-full);
}

.definition-box {
  background: var(--color-bg-4);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-32);
  border: 2px solid rgba(var(--color-primary-rgb), 0.3);
  position: relative;
  overflow: hidden;
}

.definition-box::before {
  content: "💡";
  position: absolute;
  top: var(--space-16);
  right: var(--space-16);
  font-size: 1.5rem;
  opacity: 0.5;
}

.main-definition {
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  font-weight: var(--font-weight-medium);
  text-align: center;
  color: var(--color-text);
  margin: 0;
  line-height: var(--line-height-normal);
}
.presentation-container {
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(
    135deg,
    var(--color-slate-900) 0%,
    var(--color-charcoal-800) 100%
  );
  color: var(--color-text);
  font-family: var(--font-family-base);
  overflow: hidden;
}

/* Header */
.presentation-header {
  padding: var(--space-16) var(--space-32);
  background: rgba(var(--color-slate-900-rgb), 0.8);
  border-bottom: 2px solid var(--color-primary);
  backdrop-filter: blur(10px);
}

.progress-info {
  display: flex;
  justify-content: center;
  align-items: center;
}

.slide-counter {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-full);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
}

/* Main slides area */
.slides-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  padding: var(--space-32);
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transform: translateX(100px);
  transition: all 0.4s var(--ease-standard);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-32);
}

.slide.active {
  opacity: 1;
  transform: translateX(0);
}

.slide-content {
  width: 100%;
  max-width: 1200px;
  text-align: center;
}

/* Typography for slides */
.slide-content h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: var(--space-32);
  color: var(--color-primary);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  line-height: var(--line-height-tight);
}

.slide-content h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin-bottom: var(--space-24);
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
}

.slide-content h3 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin-bottom: var(--space-16);
  color: var(--color-primary);
}

.slide-content h4 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  margin-bottom: var(--space-12);
  color: var(--color-text-secondary);
}

.slide-content p {
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  line-height: var(--line-height-normal);
  margin-bottom: var(--space-16);
}

.slide-content li {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  line-height: var(--line-height-normal);
  margin-bottom: var(--space-8);
}

/* Title slide specific styles */
.title-slide {
  text-align: center;
}

.title-slide h1 {
  background: linear-gradient(
    135deg,
    var(--color-teal-300),
    var(--color-primary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-24);
}

.title-slide h2 {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-normal);
  margin-bottom: var(--space-32);
}

.tools-list {
  display: flex;
  gap: var(--space-16);
  justify-content: center;
  margin-bottom: var(--space-32);
  flex-wrap: wrap;
}

.tool-badge {
  background: var(--color-bg-1);
  color: var(--color-primary);
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-lg);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
}

/* Professor info styles */
.professor-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-24);
  margin: var(--space-32) 0;
  background: var(--color-bg-8);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
}

.professor-photo-container {
  position: relative;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.professor-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.professor-photo-fallback {
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-btn-primary-text);
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
}

.professor-details {
  text-align: left;
}

.professor-name {
  font-size: var(--font-size-2xl);
  color: var(--color-text);
  margin: 0 0 var(--space-8) 0;
}

.professor-site {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--duration-fast) var(--ease-standard);
}

.professor-site:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

.course-info {
  margin-top: var(--space-32);
}

.course-title {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--space-8);
}

.institution {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

/* Closing slide specific styles */
.closing-slide {
  text-align: center;
}

.closing-slide h1 {
  font-size: clamp(3rem, 6vw, 5rem);
  color: var(--color-success);
  margin-bottom: var(--space-32);
}

.closing-message {
  margin-bottom: var(--space-32);
}

.closing-message p {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  color: var(--color-text);
  margin-bottom: var(--space-16);
}

.contact-list {
  background: var(--color-bg-3);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(var(--color-success-rgb), 0.3);
  margin-top: var(--space-24);
}

.contact-list p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-12);
  color: var(--color-text);
}

/* Agenda styles */
.agenda-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-16);
  margin-top: var(--space-32);
}

.agenda-item {
  background: var(--color-bg-1);
  padding: var(--space-16) var(--space-20);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  transition: all var(--duration-normal) var(--ease-standard);
}

.agenda-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: var(--color-bg-2);
}

/* Objectives styles */
.objectives-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-32);
  margin-top: var(--space-32);
  text-align: left;
}

.objectives-section h3 {
  text-align: center;
  margin-bottom: var(--space-20);
}

.objectives-list {
  list-style: none;
  padding: 0;
}

.objectives-list li {
  background: var(--color-bg-3);
  padding: var(--space-12) var(--space-16);
  margin-bottom: var(--space-12);
  border-radius: var(--radius-base);
  border-left: 4px solid var(--color-primary);
  position: relative;
  font-size: var(--font-size-lg);
}

.objectives-list li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
  margin-right: var(--space-8);
}

/* Enhanced didactic styles for better learning */

/* Learning Steps Enhancement */
.learning-steps {
  margin-top: var(--space-24);
}

.comparison-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  margin-top: var(--space-20);
}

.human-learning,
.machine-learning {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.human-learning {
  border-left: 4px solid var(--color-success);
}

.machine-learning {
  border-left: 4px solid var(--color-primary);
}

.human-learning h4 {
  color: var(--color-success);
  margin-bottom: var(--space-12);
  text-align: center;
}

.machine-learning h4 {
  color: var(--color-primary);
  margin-bottom: var(--space-12);
  text-align: center;
}

.comparison-steps ol {
  padding-left: var(--space-20);
}

.comparison-steps li {
  background: var(--color-bg-1);
  padding: var(--space-12) var(--space-16);
  margin-bottom: var(--space-12);
  border-radius: var(--radius-base);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
}

/* Practical Examples Grid */
.practical-example {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-top: var(--space-24);
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-12);
  margin-top: var(--space-16);
}

.example-item {
  background: var(--color-bg-2);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-base);
  text-align: center;
  font-weight: var(--font-weight-medium);
  border: 1px solid rgba(var(--color-warning-rgb), 0.2);
  transition: all var(--duration-normal) var(--ease-standard);
}

.example-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: var(--color-bg-3);
}

.key-insight {
  background: var(--color-bg-4);
  padding: var(--space-16) var(--space-20);
  border-radius: var(--radius-base);
  text-align: center;
  font-size: var(--font-size-lg);
  margin-top: var(--space-24);
  border: 2px solid rgba(var(--color-primary-rgb), 0.3);
}

/* Enhanced CNN Styles */
.visual-analogy {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin: var(--space-24) 0;
}

.vision-process {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-16);
  margin-top: var(--space-16);
}

.vision-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--color-bg-1);
  padding: var(--space-16);
  border-radius: var(--radius-base);
  text-align: center;
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

.vision-step .step-number {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-12);
}

.step-detail strong {
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-8);
}

.cnn-advantage {
  margin-top: var(--space-24);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-20);
  margin-top: var(--space-16);
}

.advantage-item {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-standard);
}

.advantage-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.advantage-icon {
  font-size: 2rem;
  margin-bottom: var(--space-12);
}

.advantage-item h4 {
  color: var(--color-primary);
  margin-bottom: var(--space-8);
}

.real-world-connection {
  margin-top: var(--space-24);
}

/* Enhanced Process Steps */
.detailed-process {
  margin-top: var(--space-24);
}

.process-step.detailed {
  display: flex;
  align-items: flex-start;
  gap: var(--space-20);
  background: var(--color-surface);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-20);
}

.step-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.step-visual .step-number {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-12);
}

.process-animation,
.activation-demo,
.pooling-demo {
  background: var(--color-bg-1);
  padding: var(--space-12);
  border-radius: var(--radius-base);
  text-align: center;
}

.filter-demo {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.step-explanation {
  flex: 1;
  text-align: left;
}

.step-explanation h4 {
  color: var(--color-primary);
  margin-bottom: var(--space-8);
  font-size: var(--font-size-xl);
}

.step-explanation p {
  margin-bottom: var(--space-8);
  line-height: var(--line-height-normal);
}

.code-example,
.math-example,
.pooling-example {
  background: var(--color-bg-8);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-sm);
  margin-top: var(--space-8);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

.multiple-filters {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-top: var(--space-24);
}

.filters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-16);
  margin-top: var(--space-16);
}

.filter-type {
  background: var(--color-bg-1);
  padding: var(--space-16);
  border-radius: var(--radius-base);
  text-align: center;
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

.filter-icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-8);
  display: block;
}

.filter-type h4 {
  color: var(--color-primary);
  margin-bottom: var(--space-8);
  font-size: var(--font-size-md);
}

.final-result {
  margin-top: var(--space-24);
}

/* Enhanced Project Overview */
.project-mission {
  background: var(--color-bg-4);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-24);
  border: 2px solid rgba(var(--color-primary-rgb), 0.3);
  text-align: center;
}

.project-journey {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-20);
}

.journey-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-16);
  margin-top: var(--space-16);
}

.journey-step {
  background: var(--color-bg-1);
  padding: var(--space-16);
  border-radius: var(--radius-base);
  text-align: center;
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  transition: all var(--duration-normal) var(--ease-standard);
}

.journey-step:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.journey-icon {
  font-size: 2rem;
  margin-bottom: var(--space-12);
  display: block;
}

.journey-step h4 {
  color: var(--color-primary);
  margin-bottom: var(--space-8);
}

.dataset-details {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-20);
}

.dataset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-16);
  margin-top: var(--space-16);
}

.dataset-section {
  background: var(--color-bg-3);
  padding: var(--space-16);
  border-radius: var(--radius-base);
  text-align: center;
  border: 1px solid rgba(var(--color-success-rgb), 0.2);
}

.dataset-icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-8);
  display: block;
}

.dataset-section h5 {
  color: var(--color-success);
  margin-bottom: var(--space-8);
  font-size: var(--font-size-lg);
}

.project-analogy {
  background: var(--color-bg-5);
  padding: var(--space-16);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-20);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

.study-comparison {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  margin-top: var(--space-12);
}

.study-phase {
  background: var(--color-surface);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-md);
}

.real-applications {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-20);
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-16);
  margin-top: var(--space-16);
}

.app-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-12);
  background: var(--color-bg-1);
  padding: var(--space-16);
  border-radius: var(--radius-base);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  transition: all var(--duration-normal) var(--ease-standard);
}

.app-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: var(--color-bg-2);
}

.app-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.app-item strong {
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-4);
}

.project-goal {
  margin-top: var(--space-24);
}

/* Responsive enhancements for new components */
@media (max-width: 768px) {
  .comparison-steps {
    grid-template-columns: 1fr;
    gap: var(--space-16);
  }

  .vision-process,
  .advantages-grid,
  .journey-steps,
  .dataset-grid,
  .filters-grid,
  .app-grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .process-step.detailed {
    flex-direction: column;
    text-align: center;
  }

  .step-explanation {
    text-align: center;
  }

  .examples-grid {
    grid-template-columns: 1fr;
  }
}

/* Animation enhancements */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide.active .journey-step,
.slide.active .vision-step,
.slide.active .advantage-item,
.slide.active .filter-type {
  animation: fadeInUp 0.6s var(--ease-standard) forwards;
}

.slide.active .journey-step:nth-child(1) {
  animation-delay: 0.1s;
}
.slide.active .journey-step:nth-child(2) {
  animation-delay: 0.2s;
}
.slide.active .journey-step:nth-child(3) {
  animation-delay: 0.3s;
}
.slide.active .journey-step:nth-child(4) {
  animation-delay: 0.4s;
}

.analogy-section h3 {
  text-align: center;
  margin-bottom: var(--space-20);
}

.analogy-steps {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.analogy-steps li {
  background: var(--color-bg-5);
  padding: var(--space-12) var(--space-16);
  margin-bottom: var(--space-12);
  border-radius: var(--radius-base);
  border-left: 3px solid var(--color-primary);
}

.highlight {
  background: var(--color-bg-6);
  padding: var(--space-16) var(--space-20);
  border-radius: var(--radius-base);
  text-align: center;
  font-weight: var(--font-weight-medium);
  margin-top: var(--space-16);
  border: 1px solid rgba(var(--color-warning-rgb), 0.3);
}

/* Comparison styles */
.comparison-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  margin-top: var(--space-32);
}

.learning-type {
  background: var(--color-surface);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: left;
}

.learning-type h3 {
  text-align: center;
  margin-bottom: var(--space-16);
  padding-bottom: var(--space-12);
  border-bottom: 2px solid var(--color-primary);
}

.analogy {
  font-style: italic;
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-16);
  font-size: var(--font-size-lg);
}

.learning-type ul {
  list-style: none;
  padding: 0;
  margin-bottom: var(--space-16);
}

.learning-type li {
  padding: var(--space-8) var(--space-12);
  margin-bottom: var(--space-8);
  background: var(--color-bg-1);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

.examples {
  background: var(--color-bg-7);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-md);
  margin-bottom: var(--space-12);
}

.project-note {
  background: var(--color-bg-3);
  color: var(--color-success);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-base);
  text-align: center;
  font-weight: var(--font-weight-medium);
  border: 1px solid rgba(var(--color-success-rgb), 0.3);
}

/* Brain comparison styles */
.brain-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  margin-top: var(--space-32);
  text-align: left;
}

.brain-section,
.artificial-section {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.structure-info {
  grid-column: 1 / -1;
  background: var(--color-bg-8);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  text-align: center;
  margin-top: var(--space-16);
}

.structure-layers {
  display: flex;
  justify-content: center;
  gap: var(--space-16);
  margin-top: var(--space-16);
  flex-wrap: wrap;
}

.layer {
  background: var(--color-surface);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-primary);
  font-weight: var(--font-weight-medium);
}

/* ML Comparison styles */
.ml-comparison {
  display: grid;
  gap: var(--space-24);
  margin-top: var(--space-32);
  text-align: left;
}

.traditional-ml,
.deep-learning {
  background: var(--color-surface);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.process-description {
  font-style: italic;
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-16);
  font-size: var(--font-size-lg);
}

.process-steps {
  background: var(--color-bg-2);
  padding: var(--space-16);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-16);
}

.example {
  background: var(--color-bg-5);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-md);
}

.advantage {
  grid-column: 1 / -1;
  background: var(--color-bg-3);
  padding: var(--space-16) var(--space-20);
  border-radius: var(--radius-base);
  text-align: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-medium);
  color: var(--color-success);
  border: 2px solid rgba(var(--color-success-rgb), 0.3);
}

/* CNN Introduction styles */
.cnn-intro {
  text-align: left;
  max-width: 900px;
  margin: 0 auto;
}

.definition {
  background: var(--color-bg-4);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-32);
  border: 2px solid rgba(var(--color-primary-rgb), 0.3);
  text-align: center;
}

.special-reasons {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-24);
}

.reasons-list {
  list-style: none;
  padding: 0;
}

.reasons-list li {
  background: var(--color-bg-1);
  padding: var(--space-12) var(--space-16);
  margin-bottom: var(--space-12);
  border-radius: var(--radius-base);
  border-left: 3px solid var(--color-primary);
}

.face-analogy {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

/* CNN Process styles */
.cnn-process {
  text-align: left;
  max-width: 900px;
  margin: 0 auto;
}

.kernel-intro {
  background: var(--color-bg-4);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-32);
  border: 2px solid rgba(var(--color-primary-rgb), 0.3);
  text-align: center;
}

.process-steps {
  display: grid;
  gap: var(--space-20);
  margin-bottom: var(--space-24);
}

.step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-16);
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.step-number {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.step-content h4 {
  margin: 0 0 var(--space-8) 0;
  color: var(--color-primary);
}

.step-content p {
  margin: 0 0 var(--space-4) 0;
  color: var(--color-text);
}

.step-content small {
  color: var(--color-text-secondary);
  font-style: italic;
}

.result {
  background: var(--color-bg-3);
  padding: var(--space-16) var(--space-20);
  border-radius: var(--radius-base);
  text-align: center;
  border: 1px solid rgba(var(--color-success-rgb), 0.3);
}

/* Components grid */
.components-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-20);
  margin-top: var(--space-32);
}

.component {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-standard);
}

.component:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.component-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-16);
}

.component-icon {
  font-size: 2rem;
  margin-bottom: var(--space-8);
}

.component h3 {
  margin: 0;
  font-size: var(--font-size-lg);
}

.function {
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  margin-bottom: var(--space-8);
}

.parameters {
  background: var(--color-bg-1);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-sm);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  display: block;
}

/* Tools grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-24);
  margin-top: var(--space-32);
}

.tool-card {
  background: var(--color-surface);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-standard);
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.tool-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-16);
}

.tool-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-8);
}

.tool-description {
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  margin-bottom: var(--space-12);
}

.tool-analogy {
  font-style: italic;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-16);
}

.tool-features {
  list-style: none;
  padding: 0;
  text-align: left;
}

.tool-features li {
  background: var(--color-bg-1);
  padding: var(--space-8) var(--space-12);
  margin-bottom: var(--space-8);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

/* Project overview styles */
.project-overview {
  text-align: left;
  max-width: 900px;
  margin: 0 auto;
}

.challenge {
  background: var(--color-bg-4);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-24);
  border: 2px solid rgba(var(--color-primary-rgb), 0.3);
  text-align: center;
}

.importance,
.dataset-info,
.applications {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-20);
}

.app-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
  margin-top: var(--space-12);
}

.app-item {
  background: var(--color-bg-1);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-base);
  font-size: var(--font-size-md);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

/* Preprocessing styles */
.preprocessing-steps {
  display: grid;
  gap: var(--space-20);
  margin-top: var(--space-24);
}

.preprocessing-step {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.preprocessing-step h3 {
  margin-bottom: var(--space-12);
}

.preprocessing-step p {
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
}

.preprocessing-step small {
  color: var(--color-text-secondary);
  font-style: italic;
}

/* Architecture styles */
.architecture-overview {
  text-align: left;
  max-width: 900px;
  margin: 0 auto;
}

.building-analogy {
  background: var(--color-bg-4);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-24);
  border: 2px solid rgba(var(--color-primary-rgb), 0.3);
  text-align: center;
}

.architecture-layers {
  display: grid;
  gap: var(--space-16);
}

.arch-layer {
  background: var(--color-surface);
  padding: var(--space-16) var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
}

.arch-layer strong {
  color: var(--color-primary);
  display: block;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-4);
}

.arch-layer small {
  color: var(--color-text-secondary);
  font-style: italic;
  display: block;
  margin: var(--space-4) 0;
}

.arch-layer code {
  background: var(--color-bg-1);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-sm);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  display: block;
  margin-top: var(--space-8);
}

/* Training phases */
.training-phases {
  display: grid;
  gap: var(--space-20);
  margin-top: var(--space-24);
}

.phase {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.phase h3 {
  margin-bottom: var(--space-12);
}

.phase p {
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
}

.phase small {
  color: var(--color-text-secondary);
  font-style: italic;
}

/* Learning cycle */
.learning-cycle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-20);
  margin-top: var(--space-24);
}

.cycle-step {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.cycle-step h3 {
  margin-bottom: var(--space-12);
}

.cycle-step p {
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
}

.cycle-step small {
  color: var(--color-text-secondary);
  font-style: italic;
}

/* Activation functions */
.activation-functions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-20);
  margin-top: var(--space-24);
}

.function-card {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.function-card h3 {
  margin-bottom: var(--space-12);
}

.function-card p {
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
}

.function-card small {
  color: var(--color-text-secondary);
  font-style: italic;
}

/* Problem explanation */
.problem-explanation {
  margin-top: var(--space-24);
}

.student-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-20);
  margin-top: var(--space-20);
}

.good-student,
.bad-student {
  background: var(--color-surface);
  padding: var(--space-16);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.good-student {
  border-left: 4px solid var(--color-success);
}

.bad-student {
  border-left: 4px solid var(--color-error);
}

/* Solutions grid */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-20);
  margin-top: var(--space-32);
}

.solution-card {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-standard);
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.solution-card h3 {
  margin-bottom: var(--space-12);
}

.solution-card p {
  margin-bottom: var(--space-12);
  font-style: italic;
  color: var(--color-text-secondary);
}

.solution-card code {
  background: var(--color-bg-1);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-sm);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  display: block;
}

/* Transfer learning */
.transfer-benefits {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-top: var(--space-20);
}

.transfer-benefits ul {
  list-style: none;
  padding: 0;
}

.transfer-benefits li {
  background: var(--color-bg-3);
  padding: var(--space-8) var(--space-12);
  margin-bottom: var(--space-8);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-success);
}

.transfer-benefits li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
  margin-right: var(--space-8);
}

/* Results comparison */
.results-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  margin-top: var(--space-32);
}

.model-result {
  background: var(--color-surface);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.model-result h3 {
  margin-bottom: var(--space-16);
}

.model-result p {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-16);
}

.model-result ul {
  list-style: none;
  padding: 0;
  text-align: left;
}

.model-result li {
  background: var(--color-bg-1);
  padding: var(--space-8) var(--space-12);
  margin-bottom: var(--space-8);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

/* MLOps lifecycle */
.mlops-lifecycle {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-20);
  margin-top: var(--space-24);
}

.lifecycle-phase {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.lifecycle-phase h3 {
  margin-bottom: var(--space-12);
}

/* Next steps */
.next-steps-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  margin-top: var(--space-32);
  text-align: left;
}

.steps-section {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.steps-section h3 {
  text-align: center;
  margin-bottom: var(--space-16);
}

.steps-section ul {
  list-style: none;
  padding: 0;
}

.steps-section li {
  background: var(--color-bg-1);
  padding: var(--space-8) var(--space-12);
  margin-bottom: var(--space-8);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

/* Resources */
.resources-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  margin-top: var(--space-32);
  text-align: left;
}

.resource-section {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.resource-section h3 {
  text-align: center;
  margin-bottom: var(--space-16);
}

.resource-section ul {
  list-style: none;
  padding: 0;
}

.resource-section li {
  background: var(--color-bg-1);
  padding: var(--space-8) var(--space-12);
  margin-bottom: var(--space-8);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

/* Discussion styles */
.discussion-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  margin-top: var(--space-32);
  text-align: left;
}

.questions-section,
.practical-section {
  background: var(--color-surface);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.question-list {
  list-style: none;
  padding: 0;
}

.question-list li {
  background: var(--color-bg-1);
  padding: var(--space-12) var(--space-16);
  margin-bottom: var(--space-12);
  border-radius: var(--radius-base);
  border-left: 3px solid var(--color-primary);
}

.contact-info {
  grid-column: 1 / -1;
  background: var(--color-bg-6);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  text-align: center;
  margin-top: var(--space-16);
}

.next-class {
  grid-column: 1 / -1;
  background: var(--color-bg-3);
  padding: var(--space-16) var(--space-20);
  border-radius: var(--radius-base);
  text-align: center;
  margin-top: var(--space-16);
  border: 2px solid rgba(var(--color-success-rgb), 0.3);
}

/* Footer navigation */
.presentation-footer {
  padding: var(--space-20) var(--space-32);
  background: rgba(var(--color-slate-900-rgb), 0.9);
  border-top: 2px solid var(--color-primary);
  backdrop-filter: blur(10px);
}

.navigation-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-12) var(--space-20);
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border: none;
  border-radius: var(--radius-base);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  min-width: 120px;
}

.nav-btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

.nav-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.nav-btn__icon {
  font-size: 1.2em;
  font-weight: var(--font-weight-bold);
}

.slide-indicator {
  display: flex;
  align-items: center;
}

.indicator-dots {
  display: flex;
  gap: var(--space-6);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(var(--color-text-secondary-rgb, 98, 108, 113), 0.4);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
}

.dot.active {
  background: var(--color-primary);
  transform: scale(1.5);
}

.dot:hover {
  background: var(--color-primary);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .presentation-container {
    font-size: 14px;
  }

  .slides-container {
    padding: var(--space-16);
  }

  .slide {
    padding: var(--space-16);
  }

  .objectives-container,
  .comparison-container,
  .brain-comparison,
  .discussion-container,
  .learning-cycle,
  .activation-functions,
  .student-comparison,
  .results-comparison,
  .next-steps-container,
  .resources-container {
    grid-template-columns: 1fr;
    gap: var(--space-16);
  }

  .navigation-controls {
    flex-direction: column;
    gap: var(--space-16);
  }

  .nav-btn {
    min-width: 100px;
    padding: var(--space-10) var(--space-16);
    font-size: var(--font-size-md);
  }

  .tools-list {
    flex-direction: column;
    align-items: center;
  }

  .professor-info {
    flex-direction: column;
    text-align: center;
  }

  .professor-details {
    text-align: center;
  }

  .professor-photo-container {
    width: 100px;
    height: 100px;
  }
}

/* Print styles */
@media print {
  .presentation-header,
  .presentation-footer {
    display: none;
  }

  .slide {
    position: relative;
    opacity: 1;
    transform: none;
    page-break-after: always;
  }
}

/* Focus management for accessibility */
.slide:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

/* Smooth scrolling for any internal links */
html {
  scroll-behavior: smooth;
}