: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');
}

/* END PERPLEXITY DESIGN SYSTEM */
/* Layout Desktop Corrigido para Modo Palestrante - Redes Neurais */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* Variáveis do Sistema de Fontes Escaláveis */
:root {
  /* Sistema de Fontes do Modo Palestrante */
  --font-size-small-title: 24px;
  --font-size-small-subtitle: 18px;
  --font-size-small-body: 14px;
  --font-size-small-card: 16px;
  
  --font-size-medium-title: 28px;
  --font-size-medium-subtitle: 20px;
  --font-size-medium-body: 16px;
  --font-size-medium-card: 18px;
  
  --font-size-large-title: 32px;
  --font-size-large-subtitle: 22px;
  --font-size-large-body: 18px;
  --font-size-large-card: 20px;
  
  --font-size-presenter-title: 40px;
  --font-size-presenter-subtitle: 28px;
  --font-size-presenter-body: 22px;
  --font-size-presenter-card: 24px;
  
  /* Fontes Atuais (inicialmente large) */
  --current-title-size: var(--font-size-large-title);
  --current-subtitle-size: var(--font-size-large-subtitle);
  --current-body-size: var(--font-size-large-body);
  --current-card-size: var(--font-size-large-card);
  
  /* Cores para Modo Palestrante */
  --presenter-primary: #1FB8CD;
  --presenter-secondary: #FFC185;
  --presenter-accent: #B4413C;
  --presenter-bg: #ECEBD5;
  --presenter-text: #13343B;
  --presenter-border: #5D878F;
  
  /* Cores Modo Alto Contraste */
  --high-contrast-bg: #ffffff;
  --high-contrast-text: #000000;
  --high-contrast-primary: #0066cc;
  --high-contrast-secondary: #cccccc;
  --high-contrast-border: #333333;
  
  /* Layout Responsivo */
  --sidebar-width: 300px;
  --sidebar-width-tablet: 280px;
  --sidebar-width-desktop: 320px;
  
  /* Espaçamentos */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  
  /* Transições */
  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.15s ease-out;
  
  /* Sombras */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  --shadow-presenter: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', var(--font-family-base);
  background: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Header Corrigido para Modo Palestrante */
.presenter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
  min-height: 80px;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.header-left {
  flex: 1;
  display: flex;
  align-items: center;
  min-width: 200px;
}

.header-center {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.header-right {
  flex: 2;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.logo-icon {
  font-size: 2.5rem;
  color: var(--color-primary);
}

.logo-text h1 {
  font-family: 'Space Grotesk', var(--font-family-base);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
}

.subtitle {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* Controles de Font Size */
.font-controls {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-sm) var(--space-md);
  flex-wrap: wrap;
}

.font-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.font-size-controls {
  display: flex;
  gap: var(--space-xs);
}

.font-btn {
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  min-width: 32px;
}

.font-btn:hover {
  background: var(--color-secondary);
  transform: translateY(-1px);
}

.font-btn.active {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.font-slider {
  width: 80px;
  height: 6px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.font-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.font-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

#fontSizeValue {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text);
  min-width: 36px;
  background: var(--color-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
}

/* Controles do Modo Palestrante */
.presenter-controls {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.presenter-btn,
.contrast-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border: none;
  border-radius: var(--radius-base);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
  white-space: nowrap;
  min-height: 40px;
}

.presenter-btn:hover,
.contrast-btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.presenter-btn.active {
  background: var(--presenter-primary);
  box-shadow: var(--shadow-presenter);
  border: 2px solid var(--presenter-border);
}

.contrast-btn.active {
  background: var(--high-contrast-primary);
  border: 2px solid var(--high-contrast-border);
}

.traditional-controls {
  display: flex;
  gap: var(--space-sm);
}

.control-btn {
  padding: var(--space-sm);
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  color: var(--color-text);
  font-size: 1.25rem;
  cursor: pointer;
  transition: var(--transition-fast);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.control-btn:hover {
  background: var(--color-secondary-hover);
  transform: translateY(-1px);
}

/* Progress Ring */
.progress-display {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.progress-ring {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: conic-gradient(var(--color-primary) calc(var(--progress, 6) * 1%), var(--color-secondary) 0%);
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.progress-circle {
  width: 100%;
  height: 100%;
  background: var(--color-surface);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.slide-counter {
  background: var(--color-secondary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

/* Layout Principal Desktop Corrigido */
.main-layout {
  display: grid;
  grid-template-areas: 
    "sidebar content"
    "sidebar navigation";
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: 1fr auto;
  min-height: calc(100vh - 80px);
  transition: var(--transition-smooth);
}

.main-layout.sidebar-collapsed {
  grid-template-columns: 60px 1fr;
}

.main-layout.presenter-mode {
  grid-template-areas: 
    "content"
    "navigation";
  grid-template-columns: 1fr;
}

/* Sidebar Corrigida */
.sidebar {
  grid-area: sidebar;
  background: var(--color-surface);
  border-right: 2px solid var(--color-border);
  overflow-y: auto;
  transition: var(--transition-smooth);
}

.sidebar-toggle {
  display: none;
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border: none;
  border-radius: var(--radius-full);
  width: 40px;
  height: 40px;
  cursor: pointer;
  font-size: 1.25rem;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.sidebar-content {
  padding: var(--space-lg);
}

.sidebar-header {
  text-align: center;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.sidebar-header h3 {
  font-family: 'Space Grotesk', var(--font-family-base);
  font-size: var(--font-size-lg);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.completion-stats {
  background: var(--color-secondary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.nav-menu {
  list-style: none;
}

.nav-section {
  margin-bottom: var(--space-lg);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--color-secondary);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  flex: 1;
  margin-left: var(--space-sm);
}

.section-progress {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  font-size: var(--font-size-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
}

.section-slides {
  list-style: none;
}

.slide-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: none;
  border-radius: var(--radius-base);
  margin-bottom: var(--space-xs);
  cursor: pointer;
  transition: var(--transition-smooth);
  text-align: left;
}

.slide-link:hover {
  background: var(--color-secondary);
  transform: translateX(4px);
}

.slide-link.active {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
}

.slide-text {
  flex: 1;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.completion-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  flex-shrink: 0;
}

.completion-dot.completed {
  background: var(--color-success);
  box-shadow: 0 0 8px rgba(var(--color-success-rgb), 0.5);
}

/* Área de Conteúdo */
.content-area {
  grid-area: content;
  display: flex;
  flex-direction: column;
  background: var(--color-background);
  overflow-y: auto;
}

.slide-container {
  flex: 1;
  padding: var(--space-xl);
  position: relative;
  min-height: calc(100vh - 200px);
}

/* Slides com Fontes Escaláveis - CORRIGIDO */
.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateX(100px);
  transition: var(--transition-smooth);
  overflow-y: auto;
  display: none;
}

.slide.active {
  opacity: 1;
  transform: translateX(0);
  z-index: 2;
  display: block;
}

.slide-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

/* Aplicação dinâmica dos tamanhos de fonte */
.slide-title {
  font-family: 'Space Grotesk', var(--font-family-base);
  font-size: var(--current-title-size) !important;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 var(--space-md) 0;
  line-height: 1.2;
}

.slide-subtitle {
  font-size: var(--current-subtitle-size) !important;
  color: var(--color-text-secondary);
  font-style: italic;
  font-weight: 300;
  line-height: 1.4;
}

.slide-content {
  font-size: var(--current-body-size) !important;
  line-height: 1.6;
  color: var(--color-text);
}

.slide-content p,
.slide-content li,
.slide-content span {
  font-size: var(--current-body-size) !important;
  line-height: 1.6;
}

/* Cards Otimizados para Projetor */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-lg) 0;
}

.content-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition-smooth);
}

.content-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  display: block;
}

.card-title {
  font-family: 'Space Grotesk', var(--font-family-base);
  font-size: var(--current-card-size) !important;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin: 0 0 var(--space-sm) 0;
}

.card-content {
  font-size: var(--current-body-size) !important;
  line-height: 1.6;
  color: var(--color-text);
}

.card-content p,
.card-content li,
.card-content span,
.card-content div {
  font-size: inherit !important;
}

/* Fórmulas Matemáticas */
.formula {
  background: var(--color-secondary);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-base);
  padding: var(--space-md);
  margin: var(--space-md) 0;
  font-family: var(--font-family-mono);
  font-size: var(--current-card-size) !important;
  font-weight: var(--font-weight-bold);
  text-align: center;
  color: var(--color-text);
}

/* Quiz Section */
.quiz-section {
  margin: var(--space-lg);
  display: none;
}

.quiz-section:not(.hidden) {
  display: block;
}

.quiz-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-lg);
}

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.quiz-title-section h3 {
  font-family: 'Space Grotesk', var(--font-family-base);
  font-size: var(--current-card-size) !important;
  color: var(--color-text);
  margin: 0 0 var(--space-sm) 0;
}

.quiz-progress {
  font-size: var(--current-body-size) !important;
  color: var(--color-text-secondary);
  background: var(--color-secondary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
}

.score-ring {
  width: 60px;
  height: 60px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-btn-primary-text);
  font-weight: var(--font-weight-bold);
  font-size: var(--current-body-size) !important;
  box-shadow: var(--shadow-md);
}

.quiz-question {
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
}

.quiz-question-text {
  font-size: var(--current-card-size) !important;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin: 0 0 var(--space-md) 0;
  line-height: 1.5;
}

.quiz-options {
  display: grid;
  gap: var(--space-sm);
  list-style: none;
}

.quiz-option {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: var(--transition-smooth);
  cursor: pointer;
  min-height: 60px;
}

.quiz-option:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.quiz-option.selected {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb, 51, 128, 141), 0.1);
}

.quiz-option.correct {
  border-color: var(--color-success);
  background: rgba(var(--color-success-rgb), 0.1);
}

.quiz-option.incorrect {
  border-color: var(--color-error);
  background: rgba(var(--color-error-rgb), 0.1);
}

.quiz-option-label {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  cursor: pointer;
  font-size: var(--current-body-size) !important;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  line-height: 1.4;
  min-height: 60px;
}

.quiz-option-radio {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  flex-shrink: 0;
  position: relative;
}

.quiz-option-radio::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  transform: translate(-50%, -50%) scale(0);
  transition: var(--transition-fast);
}

.quiz-option.selected .quiz-option-radio::after {
  transform: translate(-50%, -50%) scale(1);
}

.quiz-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.quiz-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: var(--radius-base);
  font-size: var(--current-body-size) !important;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition-smooth);
  min-height: 48px;
}

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

.quiz-btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.quiz-btn--success {
  background: var(--color-success);
  color: var(--color-white);
}

/* Navegação */
.navigation-area {
  grid-area: navigation;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  background: var(--color-surface);
  border-top: 2px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border: none;
  border-radius: var(--radius-base);
  font-size: var(--current-body-size) !important;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition-smooth);
  min-width: 120px;
  min-height: 52px;
}

.nav-btn:hover:not(:disabled) {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.nav-btn-icon {
  font-size: var(--current-card-size) !important;
  font-weight: var(--font-weight-bold);
}

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

.quiz-trigger-btn {
  background: var(--presenter-secondary);
  color: var(--color-text);
  border: none;
  border-radius: var(--radius-base);
  padding: var(--space-md) var(--space-lg);
  font-size: var(--current-body-size) !important;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.quiz-trigger-btn:hover {
  background: var(--presenter-accent);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Modais */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  backdrop-filter: blur(8px);
}

.modal:not(.hidden) {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.9);
  transition: var(--transition-smooth);
}

.modal:not(.hidden) .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
  font-family: 'Space Grotesk', var(--font-family-base);
  font-size: var(--current-card-size) !important;
  color: var(--color-text);
  margin: 0;
}

.close-btn {
  background: none;
  border: none;
  font-size: var(--current-card-size) !important;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: var(--space-sm);
  border-radius: var(--radius-base);
  transition: var(--transition-fast);
}

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

.modal-body {
  padding: var(--space-lg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: var(--current-body-size) !important;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.modal-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-radius: var(--radius-base);
  font-size: var(--current-body-size) !important;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition-smooth);
}

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

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

.modal-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Ajuda de Teclado */
.keyboard-help {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 1500;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  transform: translateY(20px);
}

.keyboard-help:not(.hidden) {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.help-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-lg);
  min-width: 280px;
}

.help-content h4 {
  font-family: 'Space Grotesk', var(--font-family-base);
  color: var(--color-text);
  margin: 0 0 var(--space-md) 0;
  font-size: var(--current-body-size) !important;
}

.help-shortcuts {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.shortcut-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

kbd {
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text);
  box-shadow: var(--shadow-xs);
}

/* Footer */
.footer {
  background: var(--color-surface);
  border-top: 2px solid var(--color-border);
  padding: var(--space-xl) 0;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.footer-sections {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-section {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

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

.section-content h4 {
  font-family: 'Space Grotesk', var(--font-family-base);
  color: var(--color-text);
  margin: 0 0 var(--space-sm) 0;
  font-size: var(--font-size-lg);
}

.section-content p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin: 0 0 var(--space-xs) 0;
  line-height: 1.5;
}

.section-content a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: var(--transition-fast);
}

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

.footer-copyright {
  text-align: center;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
}

.copyright-text {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-xs);
}

.copyright-subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Estados do Modo Palestrante - CORRIGIDO */
body.presenter-mode {
  --current-title-size: var(--font-size-presenter-title) !important;
  --current-subtitle-size: var(--font-size-presenter-subtitle) !important;
  --current-body-size: var(--font-size-presenter-body) !important;
  --current-card-size: var(--font-size-presenter-card) !important;
}

body.presenter-mode .sidebar {
  display: none;
}

body.presenter-mode .main-layout {
  grid-template-areas: 
    "content"
    "navigation";
  grid-template-columns: 1fr;
}

body.presenter-mode .slide {
  border: 3px solid var(--presenter-border);
  box-shadow: var(--shadow-presenter);
  background: var(--presenter-bg);
  color: var(--presenter-text);
}

body.presenter-mode .content-card {
  border: 2px solid var(--presenter-border);
  box-shadow: var(--shadow-presenter);
  font-weight: 500;
  background: var(--presenter-bg);
  color: var(--presenter-text);
}

body.presenter-mode .formula {
  border: 3px solid var(--presenter-primary);
  font-weight: 700;
  background: var(--presenter-bg);
  color: var(--presenter-text);
}

/* Modo Alto Contraste - CORRIGIDO */
body.high-contrast {
  --color-background: var(--high-contrast-bg) !important;
  --color-surface: var(--high-contrast-bg) !important;
  --color-text: var(--high-contrast-text) !important;
  --color-text-secondary: var(--high-contrast-secondary) !important;
  --color-primary: var(--high-contrast-primary) !important;
  --color-border: var(--high-contrast-border) !important;
}

body.high-contrast .slide,
body.high-contrast .content-card {
  border: 3px solid var(--high-contrast-border) !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3) !important;
  background: var(--high-contrast-bg) !important;
  color: var(--high-contrast-text) !important;
}

body.high-contrast .slide-title,
body.high-contrast .card-title {
  font-weight: 700 !important;
  letter-spacing: 0.02em;
  color: var(--high-contrast-text) !important;
}

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

/* Responsividade Desktop */
@media (min-width: 1200px) {
  .main-layout {
    grid-template-columns: var(--sidebar-width-tablet) 1fr;
  }
  
  .slide-container {
    padding: var(--space-2xl);
  }
}

@media (min-width: 1440px) {
  .main-layout {
    grid-template-columns: var(--sidebar-width-desktop) 1fr;
  }
}

/* Responsividade Tablet */
@media (max-width: 1023px) {
  .main-layout {
    grid-template-columns: 1fr;
    grid-template-areas: 
      "content"
      "navigation";
  }
  
  .sidebar {
    position: fixed;
    left: -var(--sidebar-width);
    top: 80px;
    width: var(--sidebar-width);
    height: calc(100vh - 80px);
    z-index: 1500;
    transition: left var(--transition-smooth);
  }
  
  .sidebar.open {
    left: 0;
  }
  
  .sidebar-toggle {
    display: flex;
  }
  
  .presenter-header {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .header-right {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }
  
  .font-controls {
    order: 3;
    flex-basis: 100%;
  }
}

/* Responsividade Mobile */
@media (max-width: 767px) {
  .presenter-header {
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-md);
  }
  
  .header-left,
  .header-center,
  .header-right {
    flex: none;
    width: 100%;
    justify-content: center;
  }
  
  .logo-text h1 {
    font-size: 1rem;
  }
  
  .slide-container {
    padding: var(--space-md);
  }
  
  .content-grid {
    grid-template-columns: 1fr;
  }
  
  .navigation-area {
    flex-direction: column;
    gap: var(--space-md);
  }
  
  .nav-btn .nav-btn-text {
    display: none;
  }
  
  .quiz-controls {
    flex-direction: column;
  }
  
  .font-controls {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
  }
  
  .font-size-controls {
    justify-content: center;
  }
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Impressão */
@media print {
  .presenter-header,
  .sidebar,
  .navigation-area,
  .quiz-section {
    display: none !important;
  }
  
  .main-layout {
    grid-template-columns: 1fr;
    grid-template-areas: "content";
  }
  
  .slide {
    position: static;
    transform: none;
    opacity: 1;
    box-shadow: none;
    border: 2px solid #000;
    page-break-after: always;
  }
}