/* CCSA Changemakers Fellowship - Main Stylesheet */

/* ============================================
   CSS VARIABLES & THEME
   ============================================ */

:root {
  /* Colors - Light Mode */
  --color-primary: #2C5F2D;
  --color-primary-dark: #1A4D1B;
  --color-primary-light: #4A9B4D;
  --color-accent: #E07A5F;

  --bg-base: #FFFFFF;
  --bg-surface: #F8F9FA;
  --text-primary: #1A1A1A;
  --text-secondary: #5A5A5A;
  --text-tertiary: #8A8A8A;

  --border-light: #E8E8E8;
  --border-medium: #D0D0D0;

  --link-color: #2C5F2D;
  --link-hover: #1A4D1B;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;

  /* Typography */
  --font-base: 16px;

  /* Effects */
  --radius: 0.5rem;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --bg-base: #121212;
  --bg-surface: #1E1E1E;
  --text-primary: #F5F5F5;
  --text-secondary: #B8B8B8;
  --text-tertiary: #8A8A8A;

  --border-light: #2D2D2D;
  --border-medium: #404040;

  --link-color: #7ABC5E;
  --link-hover: #B8E4BA;

  --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

html.font-large { font-size: 18px; }
html.font-xl { font-size: 20px; }

/* ============================================
   RESET & BASE
   ============================================ */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-base);
  transition: background-color var(--transition), color var(--transition);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4 {
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  font-weight: 700;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p { margin-bottom: var(--space-sm); }

a {
  color: var(--link-color);
  text-decoration: underline;
  transition: color var(--transition);
}

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

/* ============================================
   LAYOUT
   ============================================ */

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-sm) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
}

.site-title:hover {
  color: var(--color-primary-dark);
}

/* Hamburger Menu Button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text-primary);
}

.site-nav {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.site-nav a {
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  transition: background var(--transition);
  white-space: nowrap;
}

.site-nav a:hover {
  background: var(--border-light);
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  background: none;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 1rem;
  color: var(--text-primary);
  transition: background var(--transition);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.dropdown-toggle:hover {
  background: var(--border-light);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition);
  z-index: 100;
  margin-top: 0.5rem;
}

.dropdown:hover .dropdown-menu,
.dropdown-menu:hover {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 0.75rem 1rem;
  border-radius: 0;
  border-bottom: 1px solid var(--border-light);
}

.dropdown-menu a:last-child {
  border-bottom: none;
}

.header-right {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

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

/* Mobile Menu */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
    order: -1;
  }

  /* Hide controls in header on mobile */
  .header-right .controls {
    display: none;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: 280px;
    background: var(--bg-surface);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-xl) var(--space-md);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
  }

  .site-nav.open {
    transform: translateX(0);
  }

  .site-nav a {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border-light);
  }

  .site-nav a:hover {
    background: var(--border-light);
  }

  /* Mobile dropdown - show as list */
  .dropdown {
    position: static;
  }

  .dropdown-toggle {
    width: 100%;
    text-align: left;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border-light);
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    border: none;
    box-shadow: none;
    margin: 0;
    background: transparent;
    padding-left: var(--space-md);
  }

  .dropdown-menu a {
    font-size: 0.9rem;
    padding: var(--space-xs) var(--space-md);
  }

  /* Show controls in menu on mobile */
  .menu-controls {
    display: flex !important;
    gap: var(--space-xs);
    padding: var(--space-md);
    border-top: 2px solid var(--border-medium);
    margin-top: auto;
    justify-content: center;
  }

  .menu-controls .btn-icon {
    flex: 1;
    max-width: 120px;
  }

  .menu-close {
    display: block !important;
    align-self: flex-end;
    background: var(--bg-base);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    line-height: 1;
    width: 44px;
    height: 44px;
    display: flex !important;
    align-items: center;
    justify-content: center;
  }

  .menu-close:hover {
    background: var(--border-light);
    border-color: var(--color-primary);
  }

  /* Overlay */
  .menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 999;
  }

  .menu-overlay.open {
    opacity: 1;
    visibility: visible;
  }
}

/* Desktop - hide menu elements */
.menu-close {
  display: none;
}

.menu-overlay {
  display: none;
}

.menu-controls {
  display: none;
}

.btn-icon {
  background: none;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius);
  padding: 0.5rem;
  cursor: pointer;
  font-size: 1.25rem;
  transition: all var(--transition);
}

.btn-icon:hover {
  background: var(--bg-surface);
  border-color: var(--color-primary);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  padding: var(--space-xl) 0;
  text-align: center;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  color: white;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero h1 {
  margin-bottom: var(--space-sm);
  color: white;
  font-size: 2.5rem;
}

.hero-subtitle {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.hero-description {
  font-size: 1.125rem;
  opacity: 0.95;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ============================================
   SECTIONS
   ============================================ */

.section {
  padding: var(--space-xl) 0;
}

.section-title {
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

/* ============================================
   CARDS & GRID
   ============================================ */

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

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: var(--space-md);
  transition: all var(--transition);
}

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

.card h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.card-meta {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-bottom: var(--space-sm);
}

.badge {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition);
  border: 2px solid transparent;
}

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

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

.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

/* ============================================
   ACTION ITEMS
   ============================================ */

.action-items-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  max-width: 900px;
}

@media (min-width: 768px) {
  .action-items-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.action-item {
  background: #FFF3E0;
  border-left: 4px solid var(--color-accent);
  padding: var(--space-md);
  border-radius: var(--radius);
}

[data-theme="dark"] .action-item {
  background: #3A2A1A;
}

.action-item h4 {
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

/* ============================================
   INTRO MESSAGE / CALLOUT
   ============================================ */

.intro-message {
  background: var(--bg-surface);
  border-left: 4px solid var(--color-primary);
  padding: var(--space-md);
  border-radius: var(--radius);
  margin-bottom: var(--space-lg);
  font-style: italic;
  color: var(--text-secondary);
}

.intro-message::before {
  content: "From the facilitators:";
  display: block;
  font-weight: 600;
  font-style: normal;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   RESOURCES
   ============================================ */

.resource-list {
  list-style: none;
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .resource-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.resource-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--text-primary);
  height: 100%;
}

.resource-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.resource-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
}

.resource-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.resource-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  backdrop-filter: blur(10px);
}

.resource-content {
  flex: 1;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.resource-title {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 1rem;
  line-height: 1.3;
}

.resource-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.4;
  flex: 1;
}

.resource-meta {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Book cards - portrait orientation */
.book-list {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: flex-start;
}

.resource-card.book-card {
  flex: 0 0 auto;
  width: 220px;
}

@media (max-width: 768px) {
  .book-list {
    flex-direction: column;
  }

  .resource-card.book-card {
    width: 100%;
    max-width: 400px;
  }
}

.resource-card.book-card .resource-image {
  height: 320px;
}

.resource-card.book-card .resource-image img {
  object-fit: contain;
  background: var(--bg-surface);
}

/* Gradient variants for different resource types */
.resource-image.gradient-article {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.resource-image.gradient-video {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.resource-image.gradient-book {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.resource-image.gradient-podcast {
  background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

/* ============================================
   VIDEO EMBEDS
   ============================================ */

.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  margin: var(--space-md) 0;
  border-radius: var(--radius);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* ============================================
   WEEK NAVIGATION
   ============================================ */

.week-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-light);
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-light);
  padding: var(--space-lg) 0;
  margin-top: var(--space-xl);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }

  .hero {
    padding: var(--space-lg) 0;
  }

  .hero p {
    font-size: 1rem;
  }

  .week-nav {
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
    justify-content: center;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

:focus {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--bg-base);
  color: var(--text-primary);
  padding: var(--space-xs) var(--space-sm);
  z-index: 1000;
}

.skip-link:focus {
  top: 0;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}