/* ============================================================
   Shared CSS for Learn page (learn.md, learn.hi.md, learn.te.md)
   Alternating light / dark sections, each ≥ 100vh tall.
   ============================================================ */

/* NOTE: global * and body resets intentionally omitted —
   Material theme sets these sitewide; overriding here would
   bleed into every blog post and other pages. */

/* ── Hero Section (Light) ──────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  padding: 4rem 2rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero .hero-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  color: #0f172a;
  line-height: 1.2;
  font-weight: 700;
}

.hero-content .subtitle {
  font-size: 1.4rem;
  color: #64748b;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-content .instructor {
  font-size: 1.1rem;
  color: #64748b;
  margin-bottom: 1rem;
}

.hero-content .credentials {
  font-size: 1rem;
  color: #64748b;
  margin-bottom: 2rem;
  line-height: 1.5;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  background: #4051b5;
  color: white !important;
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s ease;
}

.btn-primary:hover {
  background: #1e293b;
  color: white !important;
}

button[type="submit"].btn-primary:hover {
  background: #1e293b !important;
  color: white !important;
}

.btn-secondary {
  background: transparent;
  color: #4051b5;
  padding: 1rem 2rem;
  border: 2px solid #4051b5;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: #4051b5;
  color: white !important;
}

.hero-image {
  text-align: center;
}

.hero-image img {
  width: 100%;
  object-fit: cover;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

/* ── Course Details Section (Dark) ────────────────────────── */
.course-details {
  padding: 4rem 2rem;
  background: #0f172a;
  min-height: 100vh;
}

.course-details .section-title {
  color: #f1f5f9;
}

.course-details .detail-section h3 {
  color: #e2e8f0;
}

.course-details .detail-section p {
  color: #94a3b8;
}

.course-details .highlight-box {
  background: #1e293b;
  border-left-color: #818cf8;
}

.course-details .highlight-box h4 {
  color: #e2e8f0;
}

.course-details .highlight-box li {
  color: #94a3b8;
}

.course-details .module-card {
  background: #1e293b;
  border-color: #334155;
}

.course-details .module-card:hover {
  box-shadow: 0 10px 25px rgba(0,0,0,0.4);
}

.course-details .module-card h4 {
  color: #e2e8f0;
}

.course-details .module-card p {
  color: #94a3b8;
}

/* Shared containers & typography */
.details-container {
  max-width: 1000px;
  margin: 0 auto;
}

.section-title {
  font-size: 3rem;
  color: #0f172a;
  text-align: center;
  margin-bottom: 3rem;
  font-weight: 700;
}

.detail-section {
  margin-bottom: 3rem;
}

.detail-section h3 {
  font-size: 1.8rem;
  color: #0f172a;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.detail-section p {
  font-size: 1.1rem;
  line-height: 1.7;
  color: #64748b;
  margin-bottom: 1rem;
}

.highlight-box {
  background: #f8fafc;
  padding: 2rem;
  border-radius: 0.5rem;
  border-left: 4px solid #4051b5;
  margin: 2rem 0;
}

.highlight-box h4 {
  color: #0f172a;
  margin-bottom: 1rem;
  font-weight: 600;
}

.highlight-box ul {
  margin: 0;
  padding-left: 1.5rem;
}

.highlight-box li {
  margin-bottom: 0.5rem;
  color: #64748b;
}

.curriculum-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.module-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  padding: 1.5rem;
  transition: box-shadow 0.3s ease;
}

.module-card:hover {
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.module-card h4 {
  color: #0f172a;
  margin-bottom: 1rem;
  font-weight: 600;
}

.module-card p {
  color: #64748b;
  font-size: 0.95rem;
  line-height: 1.6;
}

.case-study {
  background: #fef3c7;
  border-left: 3px solid #f59e0b;
  padding: 0.5rem;
  margin: 0.5rem 0;
  border-radius: 0.25rem;
  font-size: 0.9rem;
  color: #92400e;
}

.case-study:before {
  content: "📊 ";
  font-weight: bold;
}

/* ── Course Features Section (Light) ──────────────────────── */
.course-features {
  background: #f8fafc;
  padding: 4rem 2rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.promise-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.feature {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  padding: 1.5rem;
  text-align: left;
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.feature h3 {
  color: #0f172a;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.feature p {
  color: #64748b;
  line-height: 1.7;
  font-size: 0.95rem;
  margin: 0;
}

/* ── Blog Section (Dark) — scoped to learn page ──────────── */
.hero ~ .blog-section,
section.blog-section.course-blog {
  padding: 4rem 2rem;
  background: #0f172a;
  min-height: 100vh;
}

.blog-section .section-title {
  color: #f1f5f9;
}

.blog-section .blog-card {
  background: #1e293b;
  border-color: #334155;
}

.blog-section .blog-card:hover {
  box-shadow: 0 10px 25px rgba(0,0,0,0.4);
}

.blog-section .blog-card h3 {
  color: #e2e8f0;
}

.blog-section .blog-card p {
  color: #94a3b8;
}

.blog-section .blog-card a {
  color: #818cf8;
}

.blog-section .filter-button {
  border-color: #818cf8;
  color: #818cf8;
}

.blog-section .filter-button:hover,
.blog-section .filter-button.active {
  background: #818cf8;
  color: white;
}

.blog-container {
  max-width: 1200px;
  margin: 0 auto;
}

.blog-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-button {
  padding: 0.5rem 1rem;
  border: 2px solid #4051b5;
  background: transparent;
  color: #4051b5;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
}

.filter-button:hover,
.filter-button.active {
  background: #4051b5;
  color: white;
}

.blog-carousel {
  display: flex;
  overflow-x: auto;
  gap: 1rem;
  padding: 1rem 0;
  scroll-snap-type: x mandatory;
}

.blog-card {
  flex: 0 0 300px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  padding: 1.5rem;
  transition: box-shadow 0.3s ease;
  scroll-snap-align: start;
}

.blog-card:hover {
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.blog-card h3 {
  color: #0f172a;
  margin-bottom: 1rem;
  font-size: 1.2rem;
  font-weight: 600;
}

.blog-card p {
  color: #64748b;
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.blog-card a {
  color: #4051b5;
  text-decoration: none;
  font-weight: 600;
}

.view-all {
  text-align: center;
  margin-top: 2rem;
}

.view-all .btn-primary {
  display: inline-block;
  padding: 1rem 2rem;
  background: #4051b5;
  color: white;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s ease;
}

.view-all .btn-primary:hover {
  background: #1e293b;
}

/* ── Pricing Section (Light) ──────────────────────────────── */
.pricing-section {
  background: #f8fafc;
  padding: 4rem 2rem;
  text-align: center;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.pricing-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.pricing-title {
  font-size: 3rem;
  color: #0f172a;
  margin-bottom: 3rem;
  font-weight: 700;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.pricing-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  padding: 2rem;
  transition: box-shadow 0.3s ease;
  position: relative;
}

.pricing-card:hover {
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.pricing-card.popular {
  border: 2px solid #4051b5;
  transform: scale(1.05);
}

.pricing-card.popular::before {
  content: "Most Popular";
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: #4051b5;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 1rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.pricing-card h3 {
  color: #0f172a;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.price {
  font-size: 2.5rem;
  color: #4051b5;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.original-price {
  text-decoration: line-through;
  color: #94a3b8;
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.discount {
  color: #10b981;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin: 1.5rem 0;
  padding: 0;
}

.pricing-features li {
  padding: 0.5rem 0;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  font-size: 0.9rem;
  color: #64748b;
}

.pricing-features li:before {
  content: "✓";
  color: #10b981;
  font-weight: bold;
  margin-right: 0.75rem;
  flex-shrink: 0;
}

/* ── Enroll Section (Dark) ────────────────────────────────── */
.enroll-section {
  background: #0f172a;
  color: white;
  padding: 4rem 2rem;
  text-align: center;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.enroll-section .enroll-container {
  width: 100%;
}

.enroll-container {
  max-width: 800px;
  margin: 0 auto;
}

.enroll-title {
  font-size: 3rem;
  color: white;
  margin-bottom: 2rem;
  font-weight: 700;
}

.enroll-subtitle {
  font-size: 1.2rem;
  margin-bottom: 3rem;
  opacity: 0.9;
}

/* ── Marquee / Brand Wall ─────────────────────────────────── */
.brand-wall {
  background: white;
  padding: 3rem 2rem;
  margin-top: 1rem;
}

.brand-wall h2 {
  text-align: center;
  color: #0f172a;
  font-size: 1.5rem;
  margin: 0;
}

.marquee {
  --gap: clamp(1rem, 5vw, 2rem);
  --speed: 40s;
  position: relative;
  display: flex;
  gap: var(--gap);
  align-items: center;
  margin-top: 1.5rem;
  overflow: hidden;
  user-select: none;
}

.marquee__content {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--gap);
  min-width: max-content;
  flex-shrink: 0;
  white-space: nowrap;
}

.marquee__content li {
  list-style: none;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
}

.marquee__content img {
  height: 20px;
  width: auto;
  object-fit: contain;
}

.marquee .marquee__content:first-child {
  animation: scroll-a var(--speed) linear infinite;
}

.marquee .marquee__content:last-child {
  position: absolute;
  top: 0;
  left: 0;
  animation: scroll-b var(--speed) linear infinite;
}

@keyframes scroll-a {
  from { transform: translateX(0); }
  to   { transform: translateX(calc(-100% - var(--gap))); }
}

@keyframes scroll-b {
  from { transform: translateX(calc(100% + var(--gap))); }
  to   { transform: translateX(0); }
}

.marquee:focus-within .marquee__content,
.marquee:hover .marquee__content {
  animation-play-state: paused;
}

/* ── Dropdown ─────────────────────────────────────────────── */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  display: none;
  position: absolute;
  background-color: white;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
  border-radius: 0.5rem;
  border: 1px solid #e2e8f0;
}

.dropdown-menu .dropdown-item {
  color: #4051b5;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  cursor: pointer;
  border-bottom: 1px solid #e2e8f0;
}

.dropdown-menu .dropdown-item:hover {
  background-color: #f8fafc;
}

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

.dropdown:hover .dropdown-menu {
  display: block;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero .hero-container {
    width: 100%;
    min-width: 0;
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .hero-content,
  .hero-image {
    width: 100%;
    min-width: 0;
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-image {
    order: 1;
  }

  .hero-image img {
    max-width: 100%;
    height: auto;
  }

  .cta-buttons {
    justify-content: center;
  }

  .section-title {
    font-size: 2rem;
  }
}