/*
  Course Page Styles
  Extends base.css with course-specific components
*/

/* ===== COURSE HERO ===== */
.course-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: 4rem 2rem;
  text-align: center;
  color: white;
}

.course-hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.course-code {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  padding: 0.35rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.course-hero h1 {
  color: white;
  font-size: 2.5rem;
  margin: 0 0 1rem 0;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  font-size: 1rem;
  opacity: 0.9;
}

.course-meta span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* ===== COURSE NAVIGATION ===== */
.course-nav {
  background: white;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 60px;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.course-nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0.75rem 0;
}

.course-nav li {
  margin: 0;
  font-size: 0.95rem;
}

.course-nav li::before {
  display: none;
}

.course-nav a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--color-text);
  text-decoration: none;
  border-radius: 6px;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.course-nav a:hover,
.course-nav a.active {
  background: var(--color-primary);
  color: white;
}

/* ===== COURSE SECTIONS ===== */
.course-section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.course-section:last-child {
  border-bottom: none;
}

.course-section h2 {
  margin-top: 0;
  border-left: none;
  padding-left: 0;
}

/* ===== INFO CARDS GRID ===== */
.course-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.info-card {
  background: var(--color-surface);
  border-radius: 10px;
  padding: 1.5rem;
  border: 1px solid var(--color-border);
}

.info-card h4 {
  margin: 0 0 0.75rem 0;
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
}

.info-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.info-card ul {
  margin: 0;
  padding-left: 1.25rem;
}

.info-card li {
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
  color: var(--color-text-light);
}

.info-card li::before {
  display: none;
}

/* ===== MODULE CARDS ===== */
.modules-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.module-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  transition: all var(--transition-fast);
}

.module-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.module-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.module-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
  border-radius: 10px;
  flex-shrink: 0;
}

.module-info {
  flex: 1;
}

.module-info h3 {
  margin: 0 0 0.25rem 0;
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 600;
}

.module-info h3 a {
  color: var(--color-text);
  text-decoration: none;
}

.module-info h3 a:hover {
  color: var(--color-primary);
}

.module-info p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.module-status {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  flex-shrink: 0;
}

.module-status.complete {
  background: #d4edda;
  color: #155724;
}

.module-status.current {
  background: #fff3cd;
  color: #856404;
}

.module-status.upcoming {
  background: var(--color-surface);
  color: var(--color-text-light);
}

.module-resources {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.resource-tag {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background: var(--color-surface);
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.resource-tag:hover {
  background: var(--color-primary);
  color: white;
  text-decoration: none;
}

.resource-tag.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ===== RESOURCES GRID ===== */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.resource-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
  text-align: center;
}

.resource-card h4 {
  margin: 0 0 0.75rem 0;
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: var(--color-primary);
}

.resource-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.resource-card .btn {
  width: 100%;
}

/* ===== SCHEDULE TABLE ===== */
.schedule-table-wrapper {
  overflow-x: auto;
  margin-top: 1.5rem;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.schedule-table th,
.schedule-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.schedule-table th {
  background: var(--color-surface);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.schedule-table tr:hover {
  background: rgba(77, 25, 121, 0.03);
}

.schedule-table tr.current-week {
  background: #fff3cd;
}

.schedule-table tr.highlight-row {
  background: rgba(77, 25, 121, 0.08);
}

.schedule-table tr.highlight-row td {
  font-weight: 500;
}

/* ===== CONTACT GRID ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.contact-card {
  background: var(--color-surface);
  border-radius: 10px;
  padding: 1.5rem;
}

.contact-card h4 {
  margin: 0 0 0.75rem 0;
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: var(--color-primary);
}

.contact-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ===== MODULE PAGE SPECIFIC ===== */
.module-page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: 3rem 2rem;
  color: white;
}

.module-page-header .container {
  max-width: 900px;
}

.module-breadcrumb {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-bottom: 1rem;
}

.module-breadcrumb a {
  color: white;
  text-decoration: none;
}

.module-breadcrumb a:hover {
  text-decoration: underline;
}

.module-page-header h1 {
  color: white;
  margin: 0;
  font-size: 2rem;
}

/* Content Sections within Module */
.module-content-section {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 2rem;
  margin-bottom: 2rem;
}

.module-content-section h3 {
  margin-top: 0;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Video Embed */
.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  margin-top: 1rem;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Download List */
.download-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0 0;
}

.download-list li {
  margin: 0;
  padding: 0;
}

.download-list li::before {
  display: none;
}

.download-list a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: var(--color-surface);
  border-radius: 8px;
  margin-bottom: 0.5rem;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.download-list a:hover {
  background: var(--color-primary);
  color: white;
}

.download-list .file-icon {
  font-size: 1.25rem;
}

.download-list .file-info {
  flex: 1;
}

.download-list .file-name {
  font-weight: 500;
  display: block;
}

.download-list .file-size {
  font-size: 0.8rem;
  opacity: 0.7;
}

/* Module Navigation */
.module-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.module-nav a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--color-surface);
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.module-nav a:hover {
  background: var(--color-primary);
  color: white;
}

.module-nav .next {
  margin-left: auto;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .course-hero {
    padding: 2.5rem 1rem;
  }
  
  .course-hero h1 {
    font-size: 1.75rem;
  }
  
  .course-meta {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .course-nav {
    top: 0;
  }
  
  .course-nav ul {
    gap: 0.25rem;
  }
  
  .course-nav a {
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
  }
  
  .module-header {
    flex-wrap: wrap;
  }
  
  .module-number {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  
  .module-status {
    order: -1;
    flex-basis: 100%;
    text-align: center;
    margin-bottom: 0.5rem;
  }
  
  .schedule-table th,
  .schedule-table td {
    padding: 0.6rem 0.5rem;
    font-size: 0.85rem;
  }
}