/* ═══════════════════════════════════════════════════════════
   Learn Tank — Professional polish layer
   Loaded after style.css
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg: #f7fafc;
  --bg-elevated: #ffffff;
  --bg-muted: #eef4f8;
  --text: #0b1220;
  --text-muted: #4b5b6b;
  --text-light: #7a8794;
  --border: #d7e3ec;
  --shadow: 0 1px 2px rgba(11, 18, 32, 0.04);
  --shadow-md: 0 10px 28px rgba(11, 18, 32, 0.08);
  --shadow-lg: 0 22px 50px rgba(11, 18, 32, 0.12);
  --radius: 10px;
  --radius-lg: 18px;
  --transition: 0.28s cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --primary-soft: rgba(0, 120, 184, 0.12);
  --surface-glow: radial-gradient(ellipse 80% 60% at 85% 10%, rgba(0, 120, 184, 0.16), transparent 55%),
                   radial-gradient(ellipse 60% 50% at 0% 100%, rgba(181, 122, 0, 0.08), transparent 50%);
}

[data-theme="dark"] {
  --bg: #07090c;
  --bg-elevated: #10151b;
  --bg-muted: #161d25;
  --text: #f4f7fa;
  --text-muted: #9aa8b5;
  --text-light: #6f7d8a;
  --border: #243040;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 56px rgba(0, 0, 0, 0.55);
  --primary-soft: rgba(0, 120, 184, 0.22);
  --surface-glow: radial-gradient(ellipse 70% 50% at 90% 0%, rgba(0, 120, 184, 0.22), transparent 55%),
                   radial-gradient(ellipse 50% 40% at 0% 80%, rgba(181, 122, 0, 0.1), transparent 50%);
  --accent-soft: #0c2433;
}

body {
  background-color: var(--bg);
  background-image: var(--surface-glow);
  background-attachment: fixed;
}

.container {
  width: min(1160px, 92%);
}

/* ─── Motion system ─── */
@media (prefers-reduced-motion: no-preference) {
  html.js .reveal:not(.visible) {
    opacity: 0;
    transform: translateY(28px);
  }
  .reveal {
    transition:
      opacity 0.7s var(--ease-out),
      transform 0.7s var(--ease-out);
    will-change: opacity, transform;
  }
  .reveal.visible {
    opacity: 1;
    transform: none;
  }
  .reveal-delay-1 { transition-delay: 0.08s; }
  .reveal-delay-2 { transition-delay: 0.16s; }
  .reveal-delay-3 { transition-delay: 0.24s; }
  .reveal-delay-4 { transition-delay: 0.32s; }

  .hero-enter .hero-brand,
  .hero-enter .hero-content h1,
  .hero-enter .hero-desc,
  .hero-enter .hero-actions,
  .hero-enter .hero-visual {
    animation: heroRise 0.85s var(--ease-out) both;
  }
  .hero-enter .hero-content h1 { animation-delay: 0.08s; }
  .hero-enter .hero-desc { animation-delay: 0.16s; }
  .hero-enter .hero-actions { animation-delay: 0.24s; }
  .hero-enter .hero-visual { animation-delay: 0.18s; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

@keyframes heroRise {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: none; }
}

@keyframes softFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ─── Navbar ─── */
.navbar {
  background: color-mix(in srgb, var(--bg-elevated) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.navbar.is-scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow);
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
}
.nav-links a {
  position: relative;
  background: transparent !important;
  color: var(--text-muted);
  font-weight: 600;
  padding: 0.55rem 0.85rem;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  inset-inline: 0.85rem;
  bottom: 0.2rem;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.site-logo {
  height: 44px;
  width: auto;
  object-fit: contain;
}
.btn-primary {
  border: none;
  background: linear-gradient(160deg, var(--primary-light), var(--primary) 55%, var(--primary-dark));
  box-shadow: 0 8px 20px rgba(0, 120, 184, 0.22);
}
.btn-primary:hover {
  background: linear-gradient(160deg, var(--primary), var(--primary-dark));
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(0, 120, 184, 0.28);
}
.btn-secondary {
  background: transparent;
  border: 1.5px solid color-mix(in srgb, var(--primary) 35%, var(--border));
  color: var(--primary-dark);
}
[data-theme="dark"] .btn-secondary { color: #7ec8ea; }
.btn-secondary:hover {
  background: var(--primary-soft);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

/* ─── Hero ─── */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  padding: calc(var(--nav-height) + 2rem) 0 3.5rem;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(0, 120, 184, 0.08), transparent 42%),
    linear-gradient(0deg, var(--bg), transparent 28%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}
.hero.hero-no-visual .hero-grid {
  grid-template-columns: 1fr;
  max-width: 40rem;
}
.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1rem;
  color: var(--primary);
  font-family: 'El Messiri', 'Tajawal', sans-serif;
  font-weight: 700;
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.hero-brand img {
  height: 40px;
  width: auto;
}
.hero-content h1 {
  font-size: clamp(2rem, 4.8vw, 3.25rem);
  line-height: 1.18;
  max-width: 14ch;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}
.hero-desc {
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  color: var(--text-muted);
  max-width: 32rem;
  margin-bottom: 1.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.75;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0;
}
.hero-visual {
  position: relative;
}
.hero-visual::before {
  content: '';
  position: absolute;
  inset: 8% -6% -6% 12%;
  background: radial-gradient(circle, rgba(0, 120, 184, 0.18), transparent 68%);
  filter: blur(8px);
  z-index: 0;
  pointer-events: none;
}
.hero-photo {
  position: relative;
  z-index: 1;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--border) 80%, var(--primary));
  box-shadow: var(--shadow-lg);
  background: var(--bg-elevated);
  aspect-ratio: 4 / 3;
}
.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.01);
  transition: transform 1.2s var(--ease-out);
}
.hero:hover .hero-photo img {
  transform: scale(1.04);
}

/* Clear tracks panel instead of fake dashboard */
.hero-tracks {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.7rem;
  padding: 1rem;
  border-radius: 22px;
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
}
.hero-tracks-label {
  margin: 0 0 0.15rem;
  padding: 0 0.25rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}
.hero-track-item {
  display: grid;
  grid-template-columns: 1fr 88px;
  gap: 0.75rem;
  align-items: center;
  padding: 0.85rem 0.9rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--bg);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.hero-track-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
}
.hero-track-kicker {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.2rem;
}
.hero-track-copy strong {
  display: block;
  font-size: 1rem;
  line-height: 1.3;
  margin-bottom: 0.2rem;
}
.hero-track-copy small {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.45;
}
.hero-track-thumb {
  width: 88px;
  height: 64px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-muted);
}
.hero-track-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-track-item.track-chem { border-color: color-mix(in srgb, #3b82f6 25%, var(--border)); }
.hero-track-item.track-biz { border-color: color-mix(in srgb, #16a34a 25%, var(--border)); }
.hero-track-item.track-pharma { border-color: color-mix(in srgb, #0ea5e9 25%, var(--border)); }

/* Stats strip (below hero, not inside first composition) */
.home-proof {
  padding: 0 0 2.5rem;
  margin-top: -0.5rem;
}
.home-proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--bg-elevated) 88%, transparent);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}
.home-proof-item {
  text-align: center;
  padding: 0.35rem 0.5rem;
}
.home-proof-item strong {
  display: block;
  font-family: 'El Messiri', sans-serif;
  font-size: 1.35rem;
  color: var(--primary);
  line-height: 1.2;
}
.home-proof-item span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ─── Search ─── */
.search-section {
  padding: 0 0 3.5rem;
}
.search-box {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.4rem 0.4rem 0.4rem 1.1rem;
  box-shadow: var(--shadow);
  background: var(--bg-elevated);
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-soft), var(--shadow-md);
}
.search-tags {
  gap: 0.45rem;
  margin-top: 1.1rem;
}
.search-tag {
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 0.4rem 0.85rem;
  font-weight: 600;
}
.search-tag:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-1px);
}

/* ─── Sections rhythm ─── */
section {
  padding: clamp(3rem, 6vw, 5rem) 0;
}
.section-title {
  letter-spacing: -0.02em;
}
.section-subtitle {
  max-width: 36rem;
  margin-bottom: 2rem;
}
.section-header {
  margin-bottom: 1.75rem;
  align-items: flex-end;
}

/* ─── Track cards ─── */
.tracks-wrap {
  padding-top: 1rem;
}
.tracks-stack {
  gap: 1.35rem;
}
.track-card {
  min-height: 320px;
  border-radius: 22px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
}
.track-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: color-mix(in srgb, var(--primary) 35%, var(--border));
}
.track-copy {
  padding: 2.1rem 2.2rem 1.9rem;
}
.track-kicker {
  color: var(--primary);
  font-weight: 700;
  font-size: 0.84rem;
  margin-bottom: 0.45rem;
  letter-spacing: 0.02em;
}
.track-card h2 {
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  margin-bottom: 0.65rem;
  letter-spacing: -0.02em;
}
.track-lead {
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.7;
}
.track-points {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
}
.track-points li {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.track-ico {
  color: var(--secondary);
  font-size: 0.75rem;
  margin-top: 0.3rem;
}
.track-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
  color: var(--primary);
}
.track-cta::after {
  content: '←';
  transition: transform var(--transition);
}
html[dir="ltr"] .track-cta::after { content: '→'; }
.track-card:hover .track-cta::after {
  transform: translateX(-4px);
}
html[dir="ltr"] .track-card:hover .track-cta::after {
  transform: translateX(4px);
}
.track-visual {
  position: relative;
  overflow: hidden;
  min-height: 220px;
  background: var(--bg-muted);
}
.track-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.9s var(--ease-out);
}
.track-card:hover .track-visual img {
  transform: scale(1.06);
}
.track-chem { border-color: color-mix(in srgb, #3b82f6 28%, var(--border)); }
.track-biz { border-color: color-mix(in srgb, #16a34a 28%, var(--border)); }
.track-pharma { border-color: color-mix(in srgb, #0ea5e9 28%, var(--border)); }

/* ─── Course cards ─── */
.course-card {
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
  overflow: hidden;
}
.course-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
}
.course-thumb {
  height: 180px;
}
.course-thumb img {
  transition: transform 0.8s var(--ease-out);
}
.course-card:hover .course-thumb img {
  transform: scale(1.07);
}
.course-badge {
  border-radius: 8px;
  backdrop-filter: blur(6px);
  background: rgba(11, 18, 32, 0.62);
}
.course-badge.free {
  background: color-mix(in srgb, var(--success) 90%, #000);
}
.course-body {
  padding: 1.15rem 1.2rem 1.25rem;
}
.course-card h3 {
  font-size: 1.05rem;
  line-height: 1.35;
  margin: 0.35rem 0 0.45rem;
}
.course-excerpt {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-bottom: 0.85rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.course-meta span {
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
}

/* ─── Vision / how / why ─── */
.vision-card {
  border-radius: 16px;
  padding: 1.45rem 1.4rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  height: 100%;
}
.vision-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.vision-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.85rem;
}
.vision-section {
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--bg-muted) 70%, transparent), var(--bg-muted));
}

/* ─── Stats band ─── */
.stats-section {
  background:
    linear-gradient(120deg, color-mix(in srgb, var(--primary) 92%, #003d5c), var(--primary-dark));
  color: #fff;
  border: none;
  padding: 2.75rem 0;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 50%, rgba(255,255,255,0.12), transparent 40%);
  pointer-events: none;
}
.stats-section .stat-item strong {
  color: #fff;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}
.stats-section .stat-item span {
  color: rgba(255, 255, 255, 0.82);
}

/* ─── Testimonials ─── */
.testimonial-card {
  border-radius: 16px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.testimonial-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* ─── CTA ─── */
.cta-section {
  padding: 4rem 0 5rem;
}
.cta-box {
  border: none;
  border-radius: 24px;
  padding: clamp(2.25rem, 5vw, 3.5rem);
  background:
    linear-gradient(145deg, #0b2740 0%, #0d4f78 55%, #0078B8 100%);
  color: #fff;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  display: block;
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  top: -160px;
  inset-inline-end: -120px;
  pointer-events: none;
}
.cta-box h2,
.cta-box p {
  color: #fff;
}
.cta-box p {
  opacity: 0.88;
}
.cta-box .btn-primary {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: none;
}
.cta-box .btn-primary:hover {
  background: #f2f8fc;
  transform: translateY(-1px);
}
.cta-box .btn-secondary {
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
  background: transparent;
}
.cta-box .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  color: #fff;
}

/* ─── Promo banners ─── */
.promo-banners-section {
  padding: 0.25rem 0 1.5rem;
}
.promo-banner-link {
  border-radius: 18px;
  overflow: hidden;
}
.promo-banner-link img {
  height: clamp(130px, 20vw, 210px);
  transition: transform 0.8s var(--ease-out);
}
.promo-banner-link:hover img {
  transform: scale(1.03);
}

/* ─── Footer ─── */
.footer {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  padding: 3.5rem 0 1.75rem;
}
.footer-brand p {
  line-height: 1.7;
}
.site-logo-footer {
  height: 52px;
}

/* ─── Udemy course page polish ─── */
.udemy-hero {
  background:
    radial-gradient(ellipse at 20% 0%, rgba(0, 120, 184, 0.35), transparent 45%),
    linear-gradient(160deg, #07111f 0%, #0d2f4f 55%, #0b4a70 100%);
}
.udemy-buy-card {
  border-radius: 18px;
}

/* ─── Inner pages (sections, about, contact, FAQ, search…) ─── */
.page-hero {
  position: relative;
  padding: calc(var(--nav-height) + 2.75rem) 0 2rem;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 80% at 100% 0%, rgba(0, 120, 184, 0.12), transparent 55%),
    linear-gradient(180deg, color-mix(in srgb, var(--bg-muted) 65%, transparent), transparent 85%);
  pointer-events: none;
}
.page-hero .container {
  position: relative;
  z-index: 1;
}
.page-hero h1,
.page-hero .section-title {
  font-size: clamp(1.85rem, 4vw, 2.65rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.65rem;
  max-width: 18ch;
}
.page-hero .page-kicker {
  color: var(--primary);
  font-weight: 700;
  font-size: 0.88rem;
  margin-bottom: 0.55rem;
}
.page-hero p,
.page-hero .section-subtitle {
  color: var(--text-muted);
  max-width: 38rem;
  margin-bottom: 0;
  line-height: 1.75;
  font-size: 1.05rem;
}
.track-page-body {
  padding: 1.25rem 0 4.5rem;
}

.card,
.content-card,
.empty-state {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.content-card {
  padding: 1.5rem 1.45rem;
  line-height: 1.9;
}
.content-card:hover,
.card:hover {
  box-shadow: var(--shadow-md);
}
.faq-item {
  border-radius: 14px;
  margin-bottom: 0.75rem;
  padding: 0;
  overflow: hidden;
}
.faq-item summary {
  padding: 1rem 1.15rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  transition: background var(--transition);
}
.faq-item summary:hover {
  background: var(--bg-muted);
}
.faq-item[open] summary {
  border-bottom: 1px solid var(--border);
}
.faq-item p {
  padding: 0.9rem 1.15rem 1.15rem;
  margin: 0;
  color: var(--text-muted);
  line-height: 1.8;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.15rem;
  align-items: start;
}

/* Forms on public pages */
.track-page-body input[type="text"],
.track-page-body input[type="search"],
.track-page-body input[type="email"],
.track-page-body input[type="password"],
.track-page-body input[type="file"],
.track-page-body textarea,
.track-page-body select,
.card input[type="text"],
.card input[type="email"],
.card input[type="password"],
.card input[type="file"],
.card textarea,
.card select {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.track-page-body input:focus,
.card input:focus,
.card textarea:focus,
.card select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-soft);
}

/* ─── Student dashboard ─── */
.dashboard-main {
  padding: 1.5rem 1.35rem 3rem;
}
.dash-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 1.35rem;
  flex-wrap: wrap;
}
.dash-greeting h1 {
  font-size: clamp(1.55rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}
.dash-greeting p {
  color: var(--text-muted);
  margin: 0;
}
.user-level-card,
.stat-card,
.dashboard-main .card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.user-level-card {
  padding: 0.95rem 1.15rem;
}
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.35rem;
}
.stat-card {
  padding: 1.1rem 1.15rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.stat-card-value {
  font-family: 'El Messiri', sans-serif;
  font-size: 1.65rem;
  color: var(--primary);
  line-height: 1.2;
}
.sidebar {
  background: color-mix(in srgb, var(--bg-elevated) 96%, transparent);
  border-color: var(--border);
}
.sidebar-nav a {
  border-radius: 10px;
  transition: background var(--transition), color var(--transition);
}
.sidebar-nav a.active,
.sidebar-nav a:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

/* ─── Auth pages ─── */
.student-auth-body {
  background: var(--bg);
  background-image: var(--surface-glow);
  min-height: 100vh;
}
.student-auth-visual {
  background:
    linear-gradient(160deg, #0b2740 0%, #0d4f78 55%, #0078B8 100%);
  color: #fff;
}
.student-auth-copy .page-kicker,
.student-auth-copy h1,
.student-auth-copy > p,
.student-auth-points li {
  color: #fff;
}
.student-auth-copy > p,
.student-auth-points li {
  opacity: 0.9;
}
.student-auth-card {
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  background: var(--bg-elevated);
}

/* ─── Course detail extras ─── */
.udemy-panel,
.udemy-acc,
.udemy-lesson {
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.udemy-acc > summary:hover {
  background: color-mix(in srgb, var(--accent-soft) 70%, var(--bg-elevated));
}
.udemy-lesson:hover {
  border-color: color-mix(in srgb, var(--primary) 30%, var(--border));
}

/* ─── Assessments / checkout polish ─── */
.alert.success,
.alert.error {
  border-radius: 12px;
  border: 1px solid transparent;
}
.alert.success {
  background: color-mix(in srgb, var(--success) 12%, var(--bg-elevated));
  color: var(--success);
  border-color: color-mix(in srgb, var(--success) 25%, var(--border));
}
.checkout-method {
  display: block;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  margin-top: 0.6rem;
  cursor: pointer;
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.checkout-method:hover,
.checkout-method:has(input:checked) {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

/* ─── Error pages ─── */
.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  text-align: center;
}
.error-page h1 {
  font-size: clamp(3rem, 10vw, 5rem);
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.75rem;
}
.error-page p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.cert-sheet {
  text-align: center;
  padding: 2.25rem 1.5rem;
  border: 2px solid color-mix(in srgb, var(--primary) 45%, var(--border));
  background:
    linear-gradient(180deg, var(--bg-elevated), color-mix(in srgb, var(--bg-muted) 55%, var(--bg-elevated)));
}
.cert-eyebrow {
  letter-spacing: 0.18em;
  color: var(--text-light);
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  font-weight: 700;
}
.cert-sheet h1 {
  margin: 0.35rem 0 0.85rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}
.cert-sheet h2 {
  margin: 0.5rem 0;
  color: var(--primary);
}
.cert-sheet h3 {
  margin: 0.5rem 0 1rem;
}

/* ─── Responsive ─── */
@media (max-width: 960px) {
  .hero {
    min-height: auto;
    padding: calc(var(--nav-height) + 1.5rem) 0 2.5rem;
  }
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-content h1 {
    max-width: none;
  }
  .hero-visual {
    order: -1;
    max-width: 560px;
    width: 100%;
    margin-inline: auto;
  }
  .hero-visual:has(.hero-photo),
  .hero-visual:has(.hero-tracks) {
    display: block;
  }
  .hero-track-item {
    grid-template-columns: 1fr 72px;
  }
  .hero-track-thumb {
    width: 72px;
    height: 56px;
  }
  .home-proof-grid {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
  .home-proof-item {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    text-align: start;
    padding: 0.55rem 0.25rem;
    border-bottom: 1px solid var(--border);
  }
  .home-proof-item:last-child { border-bottom: 0; }
  .track-card {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .track-visual {
    min-height: 200px;
    order: -1;
  }
  .contact-grid,
  .stats-row {
    grid-template-columns: 1fr 1fr;
  }
  .page-hero h1,
  .page-hero .section-title {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .hero-brand { font-size: 1.25rem; }
  .hero-actions .btn { width: 100%; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .stats-row,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}