/**
 * Académie des Étoiles - Custom SCORM Course Stylesheet
 *
 * Brand Colors:
 * - Primary Purple: #9b51e0 (vivid-purple) - Main brand color
 * - Primary Dark: #27334B (dark-navy-violet) - Headings and emphasis
 * - Accent Orange: #FF7500 (luminous-vivid-orange)
 * - Accent Red: #cf2e2e (vivid-red)
 * - Success Green: #00d084 (vivid-green-cyan)
 * - Blue: #47ACDF (info/secondary)
 *
 * Based on: https://www.academie-des-etoiles.fr/
 */

/* ===== ROOT VARIABLES ===== */
:root {
  /* Brand Colors - PURPLE/VIOLET THEME */
  --ade-primary: #9b51e0;          /* Vivid purple - main brand color */
  --ade-primary-dark: #27334B;     /* Dark navy-violet - headings */
  --ade-primary-light: #CAB3FF;    /* Light lavender - backgrounds */
  --ade-purple: #9b51e0;           /* Alias for primary (backwards compatibility) */
  --ade-purple-deep: #6B003E;      /* Deep purple/burgundy - accents */
  --ade-accent-orange: #FF7500;    /* Orange - CTAs */
  --ade-accent-warm: #FF9B46;      /* Warm orange - secondary */
  --ade-accent-red: #cf2e2e;
  --ade-success: #00d084;
  --ade-blue: #47ACDF;             /* Cyan blue - info/secondary */
  --ade-blue-dark: #1275B1;        /* Dark blue - links */

  /* Neutrals */
  --ade-black: #000000;
  --ade-gray-dark: #001540;
  --ade-gray: #abb8c3;
  --ade-gray-light: #f5f5f5;
  --ade-white: #ffffff;

  /* Typography */
  --ade-font-size-small: 13px;
  --ade-font-size-base: 16px;
  --ade-font-size-medium: 22px; /* Increase from 20px */
  --ade-font-size-large: 40px; /* Increase from 36px */
  --ade-font-size-xlarge: 48px; /* Increase from 42px */
  --ade-font-size-hero: 56px; /* NEW: For lesson titles */

  /* Spacing */
  --ade-space-xs: 0.44rem;  /* ~7px */
  --ade-space-sm: 0.67rem;  /* ~11px */
  --ade-space-md: 1rem;     /* 16px */
  --ade-space-lg: 1.5rem;   /* 24px */
  --ade-space-xl: 2.25rem;  /* 36px */
  --ade-space-2xl: 3.38rem; /* ~54px */
  --ade-space-3xl: 5.06rem; /* ~81px */

  /* Shadows */
  --ade-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --ade-shadow-md: 0 4px 12px rgba(155, 81, 224, 0.25);
  --ade-shadow-lg: 0 8px 20px rgba(155, 81, 224, 0.35);
  --ade-shadow-xl: 0 12px 32px rgba(155, 81, 224, 0.4);
  --ade-shadow-sharp: 6px 6px 0px rgba(0, 0, 0, 0.2);

  /* Gradients - Phase 1 Enhancement */
  --ade-gradient-primary: linear-gradient(135deg, var(--ade-primary) 0%, var(--ade-primary-dark) 100%);
  --ade-gradient-hero: linear-gradient(135deg, rgba(6,147,227,1) 0%, rgb(155,81,224) 100%);
  --ade-gradient-warm: linear-gradient(135deg, #ff6900 0%, #cf2e2e 100%);
  --ade-gradient-cool: linear-gradient(135deg, #47ACDF 0%, #9b51e0 100%);
  --ade-gradient-success: linear-gradient(135deg, #00d084 0%, #27ae60 100%);
  --ade-gradient-accent-purple: linear-gradient(135deg, rgba(155, 81, 224, 0.1) 0%, rgba(202, 179, 255, 0.15) 100%);
  --ade-gradient-accent-blue: linear-gradient(135deg, rgba(71, 172, 223, 0.08) 0%, rgba(52, 152, 219, 0.12) 100%);
  --ade-gradient-accent-orange: linear-gradient(135deg, rgba(255, 117, 0, 0.08) 0%, rgba(255, 105, 0, 0.12) 100%);
  --ade-gradient-spotlight: radial-gradient(circle at 50% 50%, rgba(155, 81, 224, 0.15) 0%, transparent 70%);
}

/* ===== BASE STYLES ===== */
* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  line-height: 1.6;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  color: var(--ade-gray-dark);
  background: #ffffff;  /* Pure white - no double background */
  margin: 0;
  padding: 0;  /* No padding - blocks handle their own spacing */
}

/* ===== BLOCK SPACING ===== */
.ade-block {
  margin: var(--ade-space-2xl) 0;  /* Vertical spacing only */
  padding: 0 var(--ade-space-xl);  /* Horizontal padding for breathing room */
  /* Width controlled by body max-width (1500px) */
}

/* First block has less top margin */
.ade-block:first-of-type {
  margin-top: var(--ade-space-xl);
}

/* Last block has less bottom margin */
.ade-block:last-of-type {
  margin-bottom: var(--ade-space-xl);
}

/* Note: Global transitions removed - each block defines its own transitions to avoid conflicts with animations */

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  color: var(--ade-gray-dark);
  margin-top: var(--ade-space-xl);
  margin-bottom: var(--ade-space-md);
  line-height: 1.3;
  font-weight: 700;
}

h1 {
  font-size: var(--ade-font-size-xlarge);
  background: var(--ade-gradient-hero);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--ade-primary); /* Fallback for older browsers */
  border-bottom: 4px solid var(--ade-primary);
  padding-bottom: var(--ade-space-sm);
  margin-bottom: var(--ade-space-xl);
  filter: drop-shadow(0 2px 4px rgba(155, 81, 224, 0.2));
}

/* Fallback for browsers that don't support background-clip */
@supports not (background-clip: text) or not (-webkit-background-clip: text) {
  h1 {
    color: var(--ade-primary);
    -webkit-text-fill-color: var(--ade-primary);
  }
}

h2 {
  font-size: var(--ade-font-size-large);
  color: var(--ade-primary-dark);
  position: relative;
  padding-left: var(--ade-space-md);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(135deg, var(--ade-primary) 0%, var(--ade-primary-dark) 100%);
  border-radius: 2px;
}

h3 {
  font-size: var(--ade-font-size-medium);
  color: var(--ade-gray-dark);
}

p {
  margin: var(--ade-space-md) 0;
  line-height: 1.7;
}

strong, b {
  font-weight: 600;
  color: var(--ade-gray-dark);
}

em {
  font-style: italic;
  color: var(--ade-primary);
}

a {
  color: var(--ade-primary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.3s ease;
}

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

/* ===== LISTS ===== */
ul, ol {
  margin: var(--ade-space-md) 0;
  padding-left: var(--ade-space-xl);
}

ul li, ol li {
  margin: var(--ade-space-sm) 0;
  line-height: 1.7;
}

ul li {
  list-style-type: none;
  position: relative;
}

ul li::before {
  content: "▸";
  color: var(--ade-primary);
  font-weight: bold;
  position: absolute;
  left: -1.5rem;
}

/* ===== LEARNING OBJECTIVES ===== */
.objectives {
  background: linear-gradient(135deg,
              rgba(155, 81, 224, 0.05) 0%,
              rgba(202, 179, 255, 0.05) 100%);
  border-left: 4px solid var(--ade-primary);
  padding: var(--ade-space-lg);
  margin: var(--ade-space-xl) 0;
  border-radius: 0 8px 8px 0;
}

.objectives h3 {
  color: var(--ade-primary);
  margin-top: 0;
}

.objectives ul {
  margin-bottom: 0;
}

.objectives li::before {
  content: "🎯";
  left: -2rem;
}

/* ===== QUIZ STYLES ===== */
.quiz-container {
  background: linear-gradient(135deg,
              rgba(155, 81, 224, 0.05) 0%,
              rgba(202, 179, 255, 0.08) 100%);
  border-radius: 16px;
  padding: var(--ade-space-2xl);
  margin: var(--ade-space-3xl) 0;
  box-shadow: var(--ade-shadow-md);
  border: 2px solid rgba(155, 81, 224, 0.15);
}

.quiz-intro {
  font-size: var(--ade-font-size-medium);
  color: var(--ade-gray-dark);
  margin-bottom: var(--ade-space-xl);
  padding-bottom: var(--ade-space-lg);
  border-bottom: 2px solid var(--ade-gray);
}

.question {
  background-color: var(--ade-white);
  border-radius: 8px;
  padding: var(--ade-space-lg);
  margin: var(--ade-space-lg) 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  border-left: 4px solid var(--ade-accent-orange);
}

.question h4 {
  color: var(--ade-gray-dark);
  margin-top: 0;
  margin-bottom: var(--ade-space-md);
  font-size: 18px;
}

.question-type {
  display: inline-block;
  background-color: var(--ade-accent-orange);
  color: var(--ade-white);
  padding: var(--ade-space-xs) var(--ade-space-md);
  border-radius: 20px;
  font-size: var(--ade-font-size-small);
  font-weight: 600;
  margin-bottom: var(--ade-space-md);
}

.question-text {
  font-size: var(--ade-font-size-base);
  line-height: 1.7;
  margin: var(--ade-space-md) 0;
}

.question-options {
  margin: var(--ade-space-md) 0;
  padding-left: var(--ade-space-lg);
}

.question-options li {
  margin: var(--ade-space-sm) 0;
  padding: var(--ade-space-sm);
  background-color: rgba(155, 81, 224, 0.05);
  border-radius: 4px;
}

.correctAnswer {
  background: linear-gradient(135deg,
              rgba(0, 208, 132, 0.1) 0%,
              rgba(122, 220, 180, 0.1) 100%);
  border-left: 4px solid var(--ade-success);
  padding: var(--ade-space-lg);
  margin: var(--ade-space-md) 0;
  border-radius: 0 8px 8px 0;
}

.correctAnswer strong {
  color: var(--ade-success);
  font-size: 18px;
}

.correctAnswer strong::before {
  content: "✅ ";
}

.explanation {
  background-color: rgba(155, 81, 224, 0.05);
  padding: var(--ade-space-md);
  margin: var(--ade-space-sm) 0;
  border-radius: 6px;
  font-style: italic;
}

.explanation strong {
  color: var(--ade-primary);
}

.explanation strong::before {
  content: "💡 ";
}

.learning-objective {
  color: var(--ade-purple);
  font-size: var(--ade-font-size-small);
  margin-top: var(--ade-space-sm);
  padding: var(--ade-space-sm);
  background-color: rgba(155, 81, 224, 0.05);
  border-radius: 4px;
}

.learning-objective strong::before {
  content: "🎯 ";
}

/* ===== EXERCISE STYLES ===== */
.exercise-container {
  background: linear-gradient(135deg,
              rgba(255, 105, 0, 0.05) 0%,
              rgba(207, 46, 46, 0.05) 100%);
  border: 2px solid var(--ade-accent-orange);
  border-radius: 12px;
  padding: var(--ade-space-xl);
  margin: var(--ade-space-2xl) 0;
}

.exercise-container h3 {
  color: var(--ade-accent-orange);
  margin-top: 0;
}

.exercise-container h3::before {
  content: "📝 ";
}

.exercise-justification {
  background-color: rgba(255, 105, 0, 0.1);
  padding: var(--ade-space-md);
  border-radius: 8px;
  margin: var(--ade-space-md) 0;
  font-style: italic;
}

.exercise-content {
  background-color: var(--ade-white);
  padding: var(--ade-space-lg);
  border-radius: 8px;
  margin-top: var(--ade-space-lg);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

/* ===== CONTENT SECTIONS ===== */
.content-section {
  margin: var(--ade-space-xl) 0;
}

.intro-hook {
  font-size: 20px;
  font-weight: 500;
  color: var(--ade-primary-dark);
  background: var(--ade-gradient-accent-purple);
  padding: var(--ade-space-xl);
  border-radius: 12px;
  margin: var(--ade-space-2xl) 0;
  border-left: 6px solid var(--ade-primary);
  box-shadow: var(--ade-shadow-sm);
}

.conclusion {
  background: var(--ade-gradient-accent-blue);
  padding: var(--ade-space-2xl);
  border-radius: 16px;
  margin: var(--ade-space-3xl) 0;
  box-shadow: var(--ade-shadow-md);
  border: 2px solid rgba(71, 172, 223, 0.2);
}

.conclusion h3 {
  color: var(--ade-primary);
}

.conclusion h3::before {
  content: "✨ ";
}

/* ===== HIGHLIGHTS & CALLOUTS ===== */
.highlight {
  background-color: rgba(252, 185, 0, 0.15);
  padding: 2px 6px;
  border-radius: 3px;
}

.tip, .note, .warning {
  padding: var(--ade-space-lg);
  margin: var(--ade-space-lg) 0;
  border-radius: 8px;
  border-left: 4px solid;
}

.tip {
  background-color: rgba(0, 208, 132, 0.1);
  border-left-color: var(--ade-success);
}

.note {
  background-color: rgba(155, 81, 224, 0.1);
  border-left-color: var(--ade-primary);
}

.warning {
  background-color: rgba(207, 46, 46, 0.1);
  border-left-color: var(--ade-accent-red);
}

/* ===== NAVIGATION ===== */
.navigation {
  display: flex;
  justify-content: space-between;
  margin-top: var(--ade-space-3xl);
  padding-top: var(--ade-space-xl);
  border-top: 2px solid var(--ade-gray-light);
}

.nav-button {
  display: inline-block;
  background: linear-gradient(135deg, var(--ade-primary) 0%, var(--ade-primary-dark) 100%);
  color: var(--ade-white);
  padding: var(--ade-space-md) var(--ade-space-xl);
  border-radius: 25px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 6px rgba(155, 81, 224, 0.3);
}

.nav-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(155, 81, 224, 0.4);
  border-bottom: none;
}

/* ===== RESPONSIVE ===== */
@media screen and (max-width: 768px) {
  body {
    padding: var(--ade-space-md);
  }

  h1 {
    font-size: 32px;
  }

  h2 {
    font-size: 24px;
  }

  h3 {
    font-size: 18px;
  }

  .quiz-container,
  .exercise-container,
  .conclusion {
    padding: var(--ade-space-lg);
  }
}

@media screen and (max-width: 480px) {
  :root {
    font-size: 14px;
  }

  h1 {
    font-size: 24px;
  }

  h2 {
    font-size: 20px;
  }

  .navigation {
    flex-direction: column;
    gap: var(--ade-space-md);
  }

  .nav-button {
    width: 100%;
    text-align: center;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  body {
    max-width: 100%;
    padding: 0;
  }

  .navigation {
    display: none;
  }

  .quiz-container,
  .exercise-container {
    break-inside: avoid;
  }

  h1, h2, h3 {
    break-after: avoid;
  }
}