:root {
  --edu-blue:       #1E3A8A;
  --edu-blue-dark:  #0F1E4A;
  --edu-blue-light: #3B82F6;
  --gold:           #FBBF24;
  --gold-dark:      #D4AF37;
  --white:          #FFFFFF;
  --gray-bg:        #F8FAFC;
  --gray-border:    #E2E8F0;
  --text-dark:      #1F2937;
  --text-muted:     #64748B;
}

* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family:'Segoe UI',Tahoma,sans-serif;
  background:var(--gray-bg);
  color:var(--text-dark);
  line-height:1.6;
}
a { text-decoration:none; color:inherit; }
.gold { color:var(--gold); }
.muted { color:var(--text-muted); font-size:0.9rem; }

/* NAVBAR */
.navbar {
  display:flex; align-items:center; gap:1rem;
  padding:0.8rem 2rem;
  background:var(--edu-blue-dark);
  color:var(--white);
  position:sticky; top:0; z-index:100;
}
.logo { display:flex; align-items:center; gap:8px; font-size:1.4rem; font-weight:bold; }
.logo-icon { font-size:1.7rem; }
.search-bar {
  flex:1; max-width:400px;
  padding:0.5rem 1rem;
  border-radius:8px;
  border:1px solid var(--edu-blue);
  background:rgba(255,255,255,0.1);
  color:var(--white);
}
.search-bar::placeholder { color:#CBD5E1; }
.nav-links { display:flex; list-style:none; gap:1.5rem; margin-left:auto; align-items:center; }
.nav-links a { color:var(--white); font-weight:500; font-size:0.95rem; }
.nav-links a:hover, .nav-links a.active { color:var(--gold); }
.avatar-link { font-size:1.3rem; background:var(--gold); padding:0.2rem 0.6rem; border-radius:50%; }

/* MOTTO BAR */
.motto-bar {
  background:linear-gradient(90deg,var(--gold),var(--gold-dark),var(--gold));
  color:var(--edu-blue-dark);
  text-align:center;
  padding:0.6rem;
  font-weight:700;
  font-size:0.95rem;
  letter-spacing:2px;
}

/* LAYOUT */
.layout {
  display:grid;
  grid-template-columns:250px 1fr;
  gap:1.5rem;
  max-width:1300px;
  margin:1.5rem auto;
  padding:0 1.5rem;
}
.full-width { grid-column:1 / -1; }

/* SIDEBAR */
.sidebar {
  background:var(--white);
  padding:1.2rem;
  border-radius:12px;
  border:1px solid var(--gray-border);
  height:fit-content;
  position:sticky; top:80px;
}
.sidebar h4 { color:var(--edu-blue); margin-bottom:0.8rem; font-size:0.85rem; text-transform:uppercase; letter-spacing:1px; }
.side-link {
  display:block;
  padding:0.5rem 0.8rem;
  border-radius:8px;
  color:var(--text-dark);
  margin-bottom:0.3rem;
  font-size:0.95rem;
}
.side-link:hover, .side-link.active {
  background:var(--gray-bg);
  color:var(--edu-blue);
  font-weight:600;
}

/* MAIN FEED */
.main-feed { display:flex; flex-direction:column; gap:1.5rem; }

/* WELCOME BANNER */
.welcome-banner {
  background:linear-gradient(135deg,var(--edu-blue),var(--edu-blue-light));
  color:var(--white);
  padding:2rem;
  border-radius:14px;
  border-bottom:4px solid var(--gold);
}
.welcome-banner h2 { font-size:1.8rem; margin-bottom:0.5rem; }
.welcome-banner p { margin-bottom:1rem; opacity:0.95; }

/* STATS */
.stats-row {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:1rem;
}
.mini-stat {
  background:var(--white);
  padding:1rem;
  border-radius:12px;
  text-align:center;
  border:1px solid var(--gray-border);
  border-top:3px solid var(--gold);
}
.mini-stat h3 { color:var(--edu-blue); font-size:1.6rem; }
.mini-stat p { color:var(--text-muted); font-size:0.85rem; }

/* SECTION HEADINGS */
.section-heading {
  color:var(--edu-blue);
  font-size:1.2rem;
  margin-top:0.5rem;
  padding-bottom:0.4rem;
  border-bottom:2px solid var(--gold);
  display:inline-block;
}

/* REPO / COURSE CARDS */
.repo-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:1rem;
}
.repo-card {
  background:var(--white);
  padding:1.2rem;
  border-radius:12px;
  border:1px solid var(--gray-border);
  border-left:4px solid var(--edu-blue);
  transition:0.25s;
}
.repo-card:hover {
  border-left-color:var(--gold);
  transform:translateY(-4px);
  box-shadow:0 10px 25px rgba(30,58,138,0.12);
}
.repo-header { display:flex; align-items:center; gap:0.6rem; margin-bottom:0.6rem; }
.repo-icon { font-size:1.4rem; }
.repo-header h4 { color:var(--edu-blue); font-size:1.05rem; }
.repo-card p { font-size:0.9rem; color:var(--text-muted); margin-bottom:0.8rem; }
.repo-footer {
  display:flex; gap:1rem; font-size:0.8rem;
  color:var(--text-muted);
  margin-bottom:0.8rem;
  flex-wrap:wrap;
}

/* BADGES */
.badge {
  background:var(--gray-bg);
  color:var(--edu-blue);
  font-size:0.7rem;
  padding:0.15rem 0.6rem;
  border-radius:20px;
  border:1px solid var(--gray-border);
  font-weight:600;
}
.badge.big {
  background:var(--gold);
  color:var(--edu-blue-dark);
  font-size:0.9rem;
  padding:0.5rem 1rem;
}
.badge-teacher {
  background:var(--gold);
  color:var(--edu-blue-dark);
  font-size:0.7rem;
  padding:0.15rem 0.6rem;
  border-radius:20px;
  font-weight:700;
  margin-left:0.4rem;
}
.badge-row { display:flex; flex-wrap:wrap; gap:0.6rem; }

/* BUTTONS */
.btn {
  display:inline-block;
  padding:0.6rem 1.2rem;
  border-radius:8px;
  font-weight:600;
  font-size:0.9rem;
  cursor:pointer;
  border:none;
  transition:0.25s;
}
.btn.small { padding:0.4rem 0.9rem; font-size:0.8rem; }
.btn-gold { background:var(--gold); color:var(--edu-blue-dark); }
.btn-gold:hover { background:var(--gold-dark); transform:translateY(-2px); }
.btn-outline-blue {
  background:transparent;
  border:1.5px solid var(--edu-blue);
  color:var(--edu-blue);
}
.btn-outline-blue:hover { background:var(--edu-blue); color:var(--white); }

/* VIDEO CARDS */
.video-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:1rem;
}
.video-card {
  background:var(--white);
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--gray-border);
  padding:1rem;
}
.video-thumb {
  background:linear-gradient(135deg,var(--edu-blue),var(--edu-blue-light));
  color:var(--white);
  height:120px;
  display:flex; align-items:center; justify-content:center;
  font-size:2rem;
  border-radius:8px;
  margin-bottom:0.8rem;
}
.video-card h4 { color:var(--edu-blue); font-size:1rem; margin-bottom:0.3rem; }
.video-meta { font-size:0.8rem; color:var(--text-muted); margin-bottom:0.6rem; }

/* ACTIVITY FEED */
.activity-feed {
  background:var(--white);
  padding:1rem 1.2rem;
  border-radius:12px;
  border:1px solid var(--gray-border);
}
.activity-item {
  display:flex; gap:0.8rem;
  padding:0.7rem 0;
  border-bottom:1px solid var(--gray-border);
  font-size:0.9rem;
}
.activity-item:last-child { border-bottom:none; }
.dot { width:10px; height:10px; border-radius:50%; margin-top:0.5rem; flex-shrink:0; }
.gold-dot { background:var(--gold); }
.blue-dot { background:var(--edu-blue-light); }

/* COURSE HEADER */
.course-header {
  background:var(--white);
  padding:1.5rem;
  border-radius:14px;
  border:1px solid var(--gray-border);
  border-top:4px solid var(--gold);
  display:flex;
  gap:1rem;
  align-items:center;
  flex-wrap:wrap;
}
.course-emoji { font-size:3rem; }
.course-header h1 { color:var(--edu-blue); font-size:1.6rem; }
.course-actions { margin-left:auto; display:flex; gap:0.6rem; }

/* TABS */
.tabs {
  display:flex; gap:0.3rem;
  background:var(--white);
  padding:0.4rem;
  border-radius:10px;
  border:1px solid var(--gray-border);
  overflow-x:auto;
}
.tab {
  padding:0.6rem 1rem;
  border-radius:8px;
  font-weight:600;
  color:var(--text-muted);
  cursor:pointer;
  white-space:nowrap;
}
.tab.active { background:var(--edu-blue); color:var(--white); }

/* LESSON ROWS */
.lesson-row {
  display:flex; justify-content:space-between; align-items:center;
  background:var(--white);
  padding:1rem 1.2rem;
  border-radius:12px;
  border:1px solid var(--gray-border);
  border-left:4px solid var(--edu-blue);
  transition:0.25s;
  gap:1rem;
}
.lesson-row:hover { border-left-color:var(--gold); transform:translateX(4px); }
.lesson-info { display:flex; align-items:center; gap:1rem; }
.lesson-num {
  background:var(--gold);
  color:var(--edu-blue-dark);
  font-weight:bold;
  width:38px; height:38px;
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
}
.lesson-row h4 { color:var(--edu-blue); font-size:1rem; }

/* VIDEO PLAYER */
.video-player {
  background:linear-gradient(135deg,var(--edu-blue-dark),var(--edu-blue));
  height:320px;
  border-radius:14px;
  display:flex; align-items:center; justify-content:center;
  flex-direction:column;
  color:var(--white);
  position:relative;
  border:3px solid var(--gold);
}
.play-overlay {
  font-size:4rem;
  background:var(--gold);
  color:var(--edu-blue-dark);
  width:90px; height:90px;
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:1rem;
  cursor:pointer;
  transition:0.3s;
}
.play-overlay:hover { transform:scale(1.1); }
.video-placeholder-text { opacity:0.8; }

/* YOUTUBE EMBED */
.video-player-embed {
  width:100%;
  aspect-ratio:16 / 9;
  border-radius:14px;
  overflow:hidden;
  border:3px solid var(--gold);
  background:#000;
  box-shadow:0 10px 30px rgba(30,58,138,0.25);
}
.video-player-embed iframe {
  width:100%;
  height:100%;
  border:none;
  display:block;
}

.video-title { color:var(--edu-blue); font-size:1.6rem; margin-top:1rem; }
.video-actions { display:flex; gap:0.6rem; flex-wrap:wrap; margin-top:0.8rem; }

/* CARD */
.card {
  background:var(--white);
  padding:1.2rem;
  border-radius:12px;
  border:1px solid var(--gray-border);
}
.card h3 { color:var(--edu-blue); margin-bottom:0.6rem; }

/* COMMENTS */
.comment {
  display:flex; gap:1rem;
  background:var(--white);
  padding:1rem;
  border-radius:12px;
  border:1px solid var(--gray-border);
}
.avatar {
  width:42px; height:42px;
  background:var(--gold);
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-size:1.3rem;
  flex-shrink:0;
}
.comment-box {
  background:var(--white);
  padding:1rem;
  border-radius:12px;
  border:1px solid var(--gray-border);
  display:flex; flex-direction:column; gap:0.6rem;
}
.comment-box textarea {
  width:100%;
  min-height:80px;
  padding:0.7rem;
  border-radius:8px;
  border:1px solid var(--gray-border);
  font-family:inherit;
  resize:vertical;
}

/* PROFILE */
.profile-header {
  display:flex; gap:1.5rem; align-items:center;
  background:var(--white);
  padding:2rem;
  border-radius:14px;
  border:1px solid var(--gray-border);
  border-top:4px solid var(--gold);
  flex-wrap:wrap;
}
.profile-avatar {
  width:100px; height:100px;
  background:var(--gold);
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-size:3rem;
}

/* PROGRESS BAR */
.progress {
  background:var(--gray-bg);
  height:8px;
  border-radius:6px;
  overflow:hidden;
  margin-top:0.5rem;
}
.progress-fill {
  background:linear-gradient(90deg,var(--edu-blue),var(--gold));
  height:100%;
  border-radius:6px;
  transition:0.4s;
}

/* FOOTER */
footer {
  background:var(--edu-blue-dark);
  color:var(--white);
  padding:2.5rem 5% 1rem;
  margin-top:2rem;
}
.footer-content {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:2rem;
  max-width:1300px;
  margin:0 auto 1.5rem;
}
.footer-content h3, .footer-content h4 { color:var(--gold); margin-bottom:0.6rem; }
.footer-content a { color:var(--white); font-size:0.9rem; }
.footer-content a:hover { color:var(--gold); }
.footer-content .motto { color:var(--gold); font-style:italic; margin-bottom:0.5rem; }
.copyright {
  text-align:center;
  padding-top:1rem;
  border-top:1px solid rgba(255,255,255,0.15);
  opacity:0.8;
  font-size:0.85rem;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .layout { grid-template-columns:1fr; }
  .sidebar { position:static; }
}
@media (max-width: 700px) {
  .navbar { flex-wrap:wrap; padding:0.8rem 1rem; }
  .search-bar { order:3; width:100%; max-width:none; }
  .nav-links { gap:0.8rem; font-size:0.85rem; }
  .course-actions { margin-left:0; width:100%; }
  .lesson-row { flex-direction:column; align-items:flex-start; }
  .motto-bar { font-size:0.8rem; letter-spacing:1px; }
}

/* LOGIN / SIGNUP PAGE STYLES */
.auth-page {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--edu-blue-dark), var(--edu-blue));
  display: flex;
  flex-direction: column;
}
.auth-back {
  color: var(--white);
  padding: 1rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-block;
}
.auth-back:hover { color: var(--gold); }
.auth-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}
.auth-card {
  background: var(--white);
  padding: 2.5rem 2rem;
  border-radius: 18px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  width: 100%;
  max-width: 420px;
  border-top: 5px solid var(--gold);
}
.auth-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 1.5rem;
}
.auth-logo .logo-icon { font-size: 2.2rem; }
.auth-logo h1 { color: var(--edu-blue); font-size: 1.8rem; font-weight: 800; }
.auth-tabs {
  display: flex;
  background: var(--gray-bg);
  border-radius: 10px;
  padding: 0.3rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--gray-border);
}
.auth-tab {
  flex: 1;
  padding: 0.7rem;
  background: transparent;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: 0.25s;
  font-family: inherit;
}
.auth-tab.active {
  background: var(--edu-blue);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3);
}
.auth-form { display: flex; flex-direction: column; gap: 0.3rem; }
.auth-form.hidden { display: none; }
.auth-form label {
  font-weight: 600;
  color: var(--edu-blue);
  font-size: 0.85rem;
  margin-top: 0.6rem;
  margin-bottom: 0.2rem;
}
.auth-form input[type="email"],
.auth-form input[type="password"],
.auth-form input[type="text"] {
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1.5px solid var(--gray-border);
  font-family: inherit;
  font-size: 0.95rem;
  transition: 0.25s;
  background: #F8FAFC;
}
.auth-form input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.25);
  background: var(--white);
}
.auth-submit {
  margin-top: 1.5rem;
  padding: 0.9rem;
  font-size: 1rem;
  width: 100%;
  border-radius: 10px;
}
.auth-hint {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1rem;
}
.auth-hint a {
  color: var(--edu-blue);
  font-weight: 700;
  cursor: pointer;
  text-decoration: underline;
}
.auth-hint a:hover { color: var(--gold-dark); }
.role-picker { display: flex; gap: 0.6rem; margin-top: 0.3rem; }
.role-option { flex: 1; cursor: pointer; }
.role-option input { display: none; }
.role-option span {
  display: block;
  text-align: center;
  padding: 0.7rem;
  border-radius: 10px;
  border: 1.5px solid var(--gray-border);
  background: #F8FAFC;
  font-size: 0.9rem;
  font-weight: 600;
  transition: 0.25s;
}
.role-option input:checked + span {
  border-color: var(--gold);
  background: var(--gold);
  color: var(--edu-blue-dark);
  box-shadow: 0 4px 12px rgba(251, 191, 36, 0.35);
}
.btn-login {
  background: var(--gold);
  color: var(--edu-blue-dark) !important;
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.85rem;
}
.btn-login:hover {
  background: var(--gold-dark);
  color: var(--white) !important;
}
.user-badge {
  background: var(--gold);
  color: var(--edu-blue-dark);
  padding: 0.35rem 0.8rem;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  transition: 0.25s;
}
.user-badge:hover { background: var(--gold-dark); }
.auth-footer {
  text-align: center;
  color: var(--white);
  padding: 1.5rem 1rem;
  font-size: 0.8rem;
  opacity: 0.85;
}
.auth-footer p { margin-bottom: 0.3rem; }
@media (max-width: 500px) {
  .auth-card { padding: 1.8rem 1.3rem; }
  .auth-logo h1 { font-size: 1.5rem; }
}

/* ADD VIDEO FORM */
.add-form { display: flex; flex-direction: column; gap: 0.3rem; }
.add-form label {
  font-weight: 600;
  color: var(--edu-blue);
  font-size: 0.9rem;
  margin-top: 0.8rem;
  margin-bottom: 0.2rem;
}
.add-form input[type="text"],
.add-form input[type="url"],
.add-form input[type="number"],
.add-form select,
.add-form textarea {
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1.5px solid var(--gray-border);
  font-family: inherit;
  font-size: 0.95rem;
  transition: 0.25s;
  background: #F8FAFC;
  width: 100%;
}
.add-form input:focus,
.add-form select:focus,
.add-form textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.25);
  background: var(--white);
}
.add-form textarea { min-height: 100px; resize: vertical; }
.add-form-actions {
  display: flex;
  gap: 0.8rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}
.form-hint {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1rem;
  font-style: italic;
}
.btn-add {
  background: var(--gold);
  color: var(--edu-blue-dark) !important;
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.btn-add:hover {
  background: var(--gold-dark);
  color: var(--white) !important;
}

/* ABOUT PAGE */
.about-hero {
  background: linear-gradient(135deg, var(--edu-blue), var(--edu-blue-light));
  color: var(--white);
  padding: 3rem 2rem;
  border-radius: 14px;
  text-align: center;
  border-bottom: 4px solid var(--gold);
}
.about-hero h1 { font-size: 2.2rem; margin-bottom: 0.5rem; }
.about-hero p { opacity: 0.95; max-width: 600px; margin: 0 auto; }
.about-card { padding: 2rem; }
.about-card h2 {
  color: var(--edu-blue);
  font-size: 1.4rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--gold);
  display: inline-block;
}
.about-card p {
  margin-bottom: 1rem;
  color: var(--text-dark);
  line-height: 1.7;
}
.about-card em { color: var(--edu-blue); font-style: italic; }
.founders-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
  margin-top: 1rem;
}
.founder-card {
  background: var(--gray-bg);
  padding: 1.5rem;
  border-radius: 14px;
  border-top: 4px solid var(--gold);
  text-align: center;
}
.founder-photo {
  width: 120px;
  height: 120px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--gold);
  background: var(--edu-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}
.founder-photo img { width: 100%; height: 100%; object-fit: cover; }
.founder-photo-placeholder { font-size: 3.5rem; color: var(--gold); }
.founder-card h3 { color: var(--edu-blue); font-size: 1.2rem; margin-bottom: 0.2rem; }
.founder-role {
  color: var(--gold-dark);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.8rem !important;
}
.founder-bio { font-size: 0.9rem; margin-bottom: 0.6rem !important; }
.school-photos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.school-photo {
  aspect-ratio: 4 / 3;
  border-radius: 12px;
  overflow: hidden;
  background: var(--edu-blue);
  border: 3px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
}
.school-photo img { width: 100%; height: 100%; object-fit: cover; }
.photo-placeholder {
  color: var(--white);
  font-weight: 600;
  font-size: 0.85rem;
  text-align: center;
  padding: 1rem;
}
.photo-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 1rem;
  font-style: italic;
}
.mission-card {
  background: linear-gradient(135deg, var(--edu-blue-dark), var(--edu-blue));
  color: var(--white);
  text-align: center;
  border-top: 4px solid var(--gold);
}
.mission-card h2 { color: var(--gold); border-bottom-color: var(--white); }
.mission-card p { color: var(--white); font-size: 1.05rem; }
.motto-big {
  font-size: 1.5rem !important;
  font-weight: 700;
  color: var(--gold) !important;
  margin-top: 1.5rem !important;
  font-style: italic;
}
.next-list { list-style: none; padding: 0; }
.next-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--gray-border);
  font-size: 0.95rem;
}
.next-list li:last-child { border-bottom: none; }

/* COURSES TREE PAGE */
.courses-hero {
  background: linear-gradient(135deg, var(--edu-blue), var(--edu-blue-light));
  color: var(--white);
  padding: 2.5rem 2rem;
  border-radius: 14px;
  text-align: center;
  border-bottom: 4px solid var(--gold);
}
.courses-hero h1 { font-size: 2rem; margin-bottom: 0.4rem; }
.courses-hero p { opacity: 0.95; max-width: 600px; margin: 0 auto; }
.exam-block {
  background: var(--white);
  border-radius: 14px;
  border: 1px solid var(--gray-border);
  border-left: 5px solid var(--edu-blue);
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.05);
}
.exam-header {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1.2rem;
  padding-bottom: 0.8rem;
  border-bottom: 2px solid var(--gold);
}
.exam-flag { font-size: 2rem; }
.exam-header h2 { color: var(--edu-blue); font-size: 1.4rem; }
.exam-header .muted { font-weight: 400; font-size: 0.95rem; }
.level-block { margin-bottom: 1.5rem; }
.level-block:last-child { margin-bottom: 0; }
.level-block h3 {
  color: var(--edu-blue);
  font-size: 1.05rem;
  margin-bottom: 0.8rem;
  display: inline-block;
  padding: 0.3rem 0.9rem;
  background: var(--gray-bg);
  border-radius: 20px;
  border: 1px solid var(--gray-border);
  font-weight: 700;
}
.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.8rem;
}
.subject-card {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.9rem 1rem;
  background: var(--gray-bg);
  border-radius: 10px;
  border: 1.5px solid transparent;
  transition: 0.25s;
  cursor: pointer;
  text-decoration: none;
  color: var(--text-dark);
}
.subject-card:hover {
  background: var(--white);
  border-color: var(--gold);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(251, 191, 36, 0.25);
}
.subject-icon { font-size: 1.4rem; flex-shrink: 0; }
.subject-name { font-weight: 600; font-size: 0.92rem; color: var(--edu-blue); }
@media (max-width: 500px) {
  .subject-grid { grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .subject-card { padding: 0.7rem; gap: 0.4rem; }
  .subject-icon { font-size: 1.2rem; }
  .subject-name { font-size: 0.8rem; }
  .courses-hero h1 { font-size: 1.5rem; }
  .exam-header h2 { font-size: 1.15rem; }
  .exam-flag { font-size: 1.5rem; }
}

/* SECTION HEADING ROW */
.section-heading-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 0.5rem;
}
.section-heading-row .section-heading { margin: 0; }