:root {
      --primary:       #1a6cf5;
      --primary-dark:  #1254c4;
      --primary-light: #e8f0fe;
      --accent:        #00c2a8;
      --accent-2:      #f5a623;

      --bg:            #f0f4ff;
      --bg-card:       #ffffff;
      --bg-sidebar:    #ffffff;
      --bg-header:     rgba(255,255,255,0.85);

      --text:          #0d1b3e;
      --text-muted:    #5a6a8a;
      --text-light:    #8a9bb8;

      --border:        #dde6f5;
      --shadow-sm:     0 2px 8px rgba(26,108,245,0.08);
      --shadow-md:     0 8px 32px rgba(26,108,245,0.13);
      --shadow-lg:     0 20px 60px rgba(26,108,245,0.18);

      --sidebar-w:     260px;
      --header-h:      68px;
      --radius:        16px;
      --radius-sm:     10px;

      --font-head:     'Sora', sans-serif;
      --font-body:     'Plus Jakarta Sans', sans-serif;

      --transition:    0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    [data-theme="dark"] {
      --bg:            #0a0f1e;
      --bg-card:       #111827;
      --bg-sidebar:    #0d1424;
      --bg-header:     rgba(13, 20, 36, 0.92);
      --text:          #e8eef8;
      --text-muted:    #8a9bb8;
      --text-light:    #4a5a78;
      --border:        #1e2d4a;
      --primary-light: #1a2540;
      --shadow-sm:     0 2px 8px rgba(0,0,0,0.3);
      --shadow-md:     0 8px 32px rgba(0,0,0,0.4);
      --shadow-lg:     0 20px 60px rgba(0,0,0,0.5);
    }

    /* ============================
       BASE
    ============================ */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    html { scroll-behavior: smooth; }

    body {
      font-family: var(--font-body);
      background: var(--bg);
      color: var(--text);
      transition: background var(--transition), color var(--transition);
      min-height: 100vh;
      overflow-x: hidden;
    }

    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    img { max-width: 100%; }

    /* ============================
       LAYOUT WRAPPER
    ============================ */
    .page-wrapper {
      display: flex;
      min-height: 100vh;
    }

    /* ============================
       SIDEBAR
    ============================ */
    .left-sidebar {
      width: var(--sidebar-w);
      background: var(--bg-sidebar);
      border-right: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      position: fixed;
      top: 0; left: 0; bottom: 0;
      z-index: 1000;
      transition: transform var(--transition), background var(--transition), border-color var(--transition);
      box-shadow: var(--shadow-md);
      overflow-y: auto;
      overflow-x: hidden;
    }

    .left-sidebar::-webkit-scrollbar { width: 4px; }
    .left-sidebar::-webkit-scrollbar-track { background: transparent; }
    .left-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

    /* Logo area */
    .brand-logo {
      padding: 20px 22px 18px;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
    }

    .brand-logo a {
      display: flex;
      align-items: center;
      gap: 8px;
      font-family: var(--font-head);
      font-weight: 700;
      font-size: 1rem;
      color: var(--primary);
      white-space: nowrap;
    }

    .brand-logo img {
      width: 34px;
      height: 34px;
      object-fit: contain;
      border-radius: 8px;
    }

    .close-btn {
      width: 32px; height: 32px;
      display: flex; align-items: center; justify-content: center;
      border-radius: 8px;
      cursor: pointer;
      color: var(--text-muted);
      transition: background var(--transition), color var(--transition);
      flex-shrink: 0;
    }
    .close-btn:hover { background: var(--primary-light); color: var(--primary); }

    /* Nav */
    .sidebar-nav { padding: 16px 12px; flex: 1; }

    .nav-section-label {
      font-size: 0.68rem;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--text-light);
      padding: 16px 12px 6px;
    }

    .sidebar-item { margin-bottom: 2px; }

    .sidebar-link {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      color: var(--text-muted);
      font-size: 0.875rem;
      font-weight: 500;
      transition: all var(--transition);
      position: relative;
    }

    .sidebar-link i {
      font-size: 1.15rem;
      flex-shrink: 0;
      width: 22px;
      text-align: center;
    }

    .sidebar-link:hover,
    .sidebar-link.active {
      background: var(--primary-light);
      color: var(--primary);
    }

    .sidebar-link.active::before {
      content: '';
      position: absolute;
      left: 0; top: 20%; bottom: 20%;
      width: 3px;
      background: var(--primary);
      border-radius: 0 4px 4px 0;
    }

    /* Promo card in sidebar */
    .sidebar-promo {
      margin: 12px;
      background: linear-gradient(135deg, var(--primary) 0%, #0a3fa8 100%);
      border-radius: var(--radius);
      padding: 18px 16px;
      color: white;
      position: relative;
      overflow: hidden;
    }

    .sidebar-promo::after {
      content: '';
      position: absolute;
      right: -20px; top: -20px;
      width: 100px; height: 100px;
      background: rgba(255,255,255,0.08);
      border-radius: 50%;
    }

    .sidebar-promo h6 {
      font-family: var(--font-head);
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.3;
      position: relative;
    }

    .sidebar-promo .btn-promo {
      background: white;
      color: var(--primary);
      border: none;
      border-radius: 8px;
      padding: 6px 14px;
      font-size: 0.78rem;
      font-weight: 700;
      cursor: pointer;
      transition: transform var(--transition);
      position: relative;
    }

    .sidebar-promo .btn-promo:hover { transform: scale(1.04); }

    /* ============================
       HEADER
    ============================ */
    .app-header {
      position: fixed;
      top: 0;
      left: var(--sidebar-w);
      right: 0;
      height: var(--header-h);
      background: var(--bg-header);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
      z-index: 900;
      display: flex;
      align-items: center;
      padding: 0 24px;
      transition: background var(--transition), border-color var(--transition), left var(--transition);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      gap: 16px;
    }

    .header-left { display: flex; align-items: center; gap: 12px; }

    .sidebar-toggle {
      width: 38px; height: 38px;
      display: flex; align-items: center; justify-content: center;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: transparent;
      color: var(--text-muted);
      cursor: pointer;
      font-size: 1.1rem;
      transition: all var(--transition);
    }
    .sidebar-toggle:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }

    .header-right { display: flex; align-items: center; gap: 10px; }

    /* Dark mode toggle */
    .theme-toggle {
      display: flex;
      align-items: center;
      gap: 8px;
      background: var(--primary-light);
      border: 1px solid var(--border);
      color: var(--primary);
      border-radius: 20px;
      padding: 6px 14px;
      font-size: 0.8rem;
      font-weight: 600;
      cursor: pointer;
      transition: all var(--transition);
      white-space: nowrap;
    }
    .theme-toggle:hover { background: var(--primary); color: white; border-color: var(--primary); }

    /* Notif bell */
    .notif-btn {
      width: 38px; height: 38px;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: transparent;
      color: var(--text-muted);
      display: flex; align-items: center; justify-content: center;
      cursor: pointer;
      font-size: 1.1rem;
      position: relative;
      transition: all var(--transition);
    }
    .notif-btn:hover { background: var(--primary-light); color: var(--primary); }
    .notif-dot {
      position: absolute;
      top: 7px; right: 7px;
      width: 8px; height: 8px;
      background: #ef4444;
      border-radius: 50%;
      border: 2px solid var(--bg-card);
    }

    /* Avatar dropdown */
    .avatar-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

    .avatar-btn {
      width: 38px; height: 38px;
      border-radius: 50%;
      border: 2px solid var(--primary);
      overflow: hidden;
      cursor: pointer;
      transition: box-shadow var(--transition);
    }
    .avatar-btn:hover { box-shadow: 0 0 0 4px rgba(26,108,245,0.2); }
    .avatar-btn img { width: 100%; height: 100%; object-fit: cover; }

.avatar-dropdown {
  position: absolute;
  top: 45px;
  right: 0;
  min-width: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.25s ease;
  z-index: 9999;
}

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

    .avatar-wrap:hover .avatar-dropdown, {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

    .avatar-dropdown a {
      display: flex; align-items: center; gap: 10px;
      padding: 9px 12px;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      color: var(--text-muted);
      transition: all var(--transition);
    }
    .avatar-dropdown a:hover { background: var(--primary-light); color: var(--primary); }

    .avatar-dropdown .divider {
      border: none;
      border-top: 1px solid var(--border);
      margin: 6px 0;
    }

    .btn-logout {
      display: flex; align-items: center; gap: 10px;
      padding: 9px 12px;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      font-weight: 600;
      color: #ef4444;
      background: transparent;
      border: none;
      width: 100%;
      cursor: pointer;
      transition: all var(--transition);
    }
    .btn-logout:hover { background: #fef2f2; }

    /* ============================
       BODY CONTENT
    ============================ */
    .body-wrapper {
      margin-left: var(--sidebar-w);
      margin-top: var(--header-h);
      flex: 1;
      min-height: calc(100vh - var(--header-h));
      transition: margin-left var(--transition);
    }

    .content-area { padding: 28px 28px 60px; }

    /* ============================
       MODAL
    ============================ */
    .modal-overlay {
      position: fixed; inset: 0;
      background: rgba(10,15,30,0.55);
      backdrop-filter: blur(4px);
      display: flex; align-items: center; justify-content: center;
      z-index: 2000;
      opacity: 0; pointer-events: none;
      transition: opacity var(--transition);
    }
    .modal-overlay.active { opacity: 1; pointer-events: all; }

    .modal-box {
      background: var(--bg-card);
      border-radius: calc(var(--radius) + 4px);
      width: 90%; max-width: 420px;
      box-shadow: var(--shadow-lg);
      transform: scale(0.95) translateY(16px);
      transition: transform var(--transition);
      overflow: hidden;
    }
    .modal-overlay.active .modal-box { transform: scale(1) translateY(0); }

    .modal-header-bar {
      padding: 20px 24px 16px;
      border-bottom: 1px solid var(--border);
      display: flex; justify-content: space-between; align-items: center;
    }
    .modal-header-bar h5 {
      font-family: var(--font-head);
      font-weight: 700;
      font-size: 1rem;
      color: var(--text);
    }
    .modal-close-btn {
      width: 30px; height: 30px;
      border-radius: 8px; border: none;
      background: var(--primary-light); color: var(--primary);
      cursor: pointer; font-size: 1rem;
      display: flex; align-items: center; justify-content: center;
      transition: all var(--transition);
    }
    .modal-close-btn:hover { background: var(--primary); color: white; }

    .modal-body-area { padding: 20px 24px; font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }

    .modal-footer-bar {
      padding: 16px 24px 20px;
      display: flex; gap: 10px; justify-content: flex-end;
    }

    /* ============================
       HERO SECTION
    ============================ */
    .hero-section {
      background: linear-gradient(135deg, #1a6cf5 0%, #0a3fa8 50%, #00c2a8 100%);
      border-radius: calc(var(--radius) + 8px);
      padding: 50px 48px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      position: relative;
      overflow: hidden;
      margin-bottom: 36px;
    }

    .hero-section::before {
      content: '';
      position: absolute;
      top: -60px; right: -60px;
      width: 280px; height: 280px;
      background: rgba(255,255,255,0.06);
      border-radius: 50%;
    }
    .hero-section::after {
      content: '';
      position: absolute;
      bottom: -80px; left: 30%;
      width: 200px; height: 200px;
      background: rgba(255,255,255,0.04);
      border-radius: 50%;
    }

    .hero-text { flex: 1; min-width: 260px; position: relative; z-index: 1; }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255,255,255,0.18);
      border: 1px solid rgba(255,255,255,0.3);
      border-radius: 20px;
      padding: 5px 14px;
      font-size: 0.78rem;
      font-weight: 600;
      color: white;
      margin-bottom: 18px;
      letter-spacing: 0.04em;
    }

    .hero-text h1 {
      font-family: var(--font-head);
      font-size: clamp(1.8rem, 4vw, 2.8rem);
      font-weight: 700;
      color: white;
      line-height: 1.2;
      margin-bottom: 14px;
    }

    .hero-text h1 span { color: #a8d8ff; }

    .hero-text p {
      font-size: 1rem;
      color: rgba(255,255,255,0.82);
      margin-bottom: 28px;
      line-height: 1.65;
      max-width: 420px;
    }

    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 11px 22px;
      border-radius: 10px;
      font-size: 0.875rem;
      font-weight: 600;
      cursor: pointer;
      border: none;
      transition: all var(--transition);
      font-family: var(--font-body);
    }

    .btn-white {
      background: white;
      color: var(--primary);
      box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    }
    .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

    .btn-outline-white {
      background: rgba(255,255,255,0.12);
      color: white;
      border: 1.5px solid rgba(255,255,255,0.35);
    }
    .btn-outline-white:hover { background: rgba(255,255,255,0.22); transform: translateY(-2px); }

    .btn-primary {
      background: var(--primary);
      color: white;
      box-shadow: 0 4px 16px rgba(26,108,245,0.3);
    }
    .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,108,245,0.4); }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
    }
    .btn-outline:hover { background: var(--primary); color: white; transform: translateY(-2px); }

    .btn-danger { background: #ef4444; color: white; }
    .btn-danger:hover { background: #dc2626; }

    .btn-secondary {
      background: var(--bg);
      color: var(--text-muted);
      border: 1px solid var(--border);
    }
    .btn-secondary:hover { background: var(--border); }

    .hero-image {
      flex: 0 0 auto;
      text-align: center;
      position: relative;
      z-index: 1;
    }
    .hero-image img { max-height: 240px; filter: drop-shadow(0 16px 32px rgba(0,0,0,0.2)); }

    /* ============================
       QUICK ACTION CARDS
    ============================ */
    .section-title {
      font-family: var(--font-head);
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 6px;
    }
    .section-subtitle {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 22px;
    }

    .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

    .action-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px 20px;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 14px;
      transition: all var(--transition);
      cursor: pointer;
      position: relative;
      overflow: hidden;
      text-decoration: none;
    }

    .action-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, var(--primary) 0%, transparent 80%);
      opacity: 0;
      transition: opacity var(--transition);
    }

    .action-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }

    .action-card:hover .card-icon { background: var(--primary); color: white; }

    .card-icon {
      width: 48px; height: 48px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex; align-items: center; justify-content: center;
      font-size: 1.3rem;
      transition: all var(--transition);
      flex-shrink: 0;
    }

    .card-icon.teal { background: rgba(0,194,168,0.12); color: #00c2a8; }
    .card-icon.orange { background: rgba(245,166,35,0.12); color: var(--accent-2); }
    .card-icon.purple { background: rgba(139,92,246,0.12); color: #8b5cf6; }
    .action-card:hover .card-icon.teal { background: #00c2a8; color: white; }
    .action-card:hover .card-icon.orange { background: var(--accent-2); color: white; }
    .action-card:hover .card-icon.purple { background: #8b5cf6; color: white; }

    .card-label {
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text);
      line-height: 1.4;
    }

    .card-arrow {
      position: absolute;
      bottom: 16px; right: 16px;
      width: 28px; height: 28px;
      border-radius: 8px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex; align-items: center; justify-content: center;
      font-size: 0.8rem;
      transition: all var(--transition);
    }
    .action-card:hover .card-arrow { background: var(--primary); color: white; }

    /* ============================
       ABOUT SECTION
    ============================ */
    #about {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: calc(var(--radius) + 4px);
      padding: 44px 40px;
      margin: 32px 0;
      transition: background var(--transition), border-color var(--transition);
    }

    .who-badge {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }

    #about h3 {
      font-family: var(--font-head);
      font-size: 1.7rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 16px;
    }

    #about p { color: var(--text-muted); line-height: 1.75; font-size: 0.9rem; }

    .team-list { margin: 20px 0; display: flex; flex-direction: column; gap: 10px; }

    .team-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 14px;
      background: var(--bg);
      border-radius: var(--radius-sm);
      font-size: 0.855rem;
      color: var(--text);
      transition: background var(--transition);
    }

    .team-item i { color: var(--primary); font-size: 1rem; flex-shrink: 0; }

    .team-item.student {
      background: rgba(0,194,168,0.07);
      border-left: 3px solid var(--accent);
    }
    .team-item.student i { color: var(--accent); }

    .leaflet-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-top: 6px;
      padding: 10px 18px;
      background: var(--primary);
      color: white;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      font-weight: 600;
      transition: all var(--transition);
    }
    .leaflet-btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

    .about-images-col { display: flex; flex-direction: column; gap: 16px; }

    .leaflet-thumb {
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
    }
    .leaflet-thumb:hover { transform: scale(1.02); box-shadow: var(--shadow-md); }
    .leaflet-thumb img { width: 100%; display: block; }
    .btn-leaflet{
    background: #2563eb;
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 14px;
    font-weight: 600;
    margin-bottom: 30px;
    cursor: pointer;
    transition: 0.3s;
}

.btn-leaflet:hover{
    background: #1d4ed8;
}
.leaflet-carousel{
    position: relative;
    width: 100%;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.leaflet-wrapper{
    display: flex;
    gap: 24px;
    overflow-x: hidden; /* penting */
    scroll-behavior: smooth;
    width: 100%;
    padding: 10px 0;
}

.leaflet-card{
    min-width: calc((100% - 48px) / 3);
    max-width: calc((100% - 48px) / 3);
    flex-shrink: 0;
}
.carousel-btn{
    position: absolute;
    z-index: 10;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    border: none;
    background: white;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    cursor: pointer;
    font-size: 24px;
    color: #2563eb;
    transition: 0.3s;
}
.leaflet-modal{
    position: fixed;
    inset: 0;

    background: rgba(0,0,0,0.75);

    display: none;
    justify-content: center;
    align-items: center;

    z-index: 9999;
}

.leaflet-modal.active{
    display: flex;
}

.modal-content{
    width: 80%;
    max-width: 1000px;

    background: white;
    border-radius: 20px;

    overflow: hidden;

    animation: zoomIn .3s ease;
}

.modal-content img{
    width: 100%;
    max-height: 80vh;

    object-fit: contain;
    background: #fff;
}

.leaflet-caption{
    padding: 20px 25px;
}

.leaflet-caption h3{
    font-size: 28px;
    margin-bottom: 10px;
    color: #0f172a;
}

.leaflet-caption p{
    color: #64748b;
    font-size: 16px;
}

.close-modal{
    position: absolute;
    top: 25px;
    right: 30px;

    color: white;
    font-size: 32px;

    cursor: pointer;
}

.modal-btn{
    position: absolute;
    top: 50%;
    transform: translateY(-50%);

    width: 65px;
    height: 65px;

    border-radius: 50%;
    border: none;

    background: rgba(255,255,255,0.95);

    font-size: 28px;
    color: #2563eb;

    cursor: pointer;

    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.prev-btn{
    left: 40px;
}

.next-btn{
    right: 40px;
}

@keyframes zoomIn{
    from{
        transform: scale(.8);
        opacity: 0;
    }
    to{
        transform: scale(1);
        opacity: 1;
    }
}
.prev{
    left: 10px;
}

.next{
    right: 10px;
}
    /* ============================
       CONTACT SECTION
    ============================ */
    #contact {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: calc(var(--radius) + 4px);
      padding: 40px;
      margin: 32px 0;
      transition: background var(--transition), border-color var(--transition);
    }

    .section-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 28px;
    }

    .section-icon {
      width: 44px; height: 44px;
      border-radius: 12px;
      display: flex; align-items: center; justify-content: center;
      font-size: 1.25rem;
      background: var(--primary-light);
      color: var(--primary);
      flex-shrink: 0;
    }

    .section-head h4 {
      font-family: var(--font-head);
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text);
    }

    .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 16px 18px;
      background: var(--bg);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
      transition: all var(--transition);
    }
    .contact-item:hover { border-color: var(--primary); background: var(--primary-light); }

    .contact-item i { font-size: 1.2rem; color: var(--primary); flex-shrink: 0; }

    .contact-item-body label { font-size: 0.72rem; color: var(--text-light); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; display: block; }
    .contact-item-body a,
    .contact-item-body span { font-size: 0.9rem; color: var(--text); font-weight: 500; }
    .contact-item-body a:hover { color: var(--primary); }

    .maps-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 18px;
      background: var(--primary);
      color: white;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      font-weight: 600;
      transition: all var(--transition);
      margin-top: 4px;
    }
    .maps-link:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

    .admin-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-top: 12px;
      padding: 6px 10px;
      border-radius: 6px;
      background: var(--bg);
      border: 1px solid var(--border);
      transition: all var(--transition);
    }
    .admin-link:hover { color: var(--primary); border-color: var(--primary); }

    /* ============================
       MATERI SECTION
    ============================ */
    #materi {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: calc(var(--radius) + 4px);
      padding: 40px;
      margin: 32px 0;
      transition: background var(--transition), border-color var(--transition);
    }

    .materi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 4px; }

    .materi-card {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 12px;
      padding: 20px 18px;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      transition: all var(--transition);
      text-decoration: none;
    }
    .materi-card:hover {
      border-color: var(--primary);
      background: var(--primary-light);
      transform: translateY(-3px);
      box-shadow: var(--shadow-sm);
    }

    .materi-icon {
      width: 42px; height: 42px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex; align-items: center; justify-content: center;
      font-size: 1.2rem;
    }
    .materi-card:hover .materi-icon { background: var(--primary); color: white; }

    .materi-card span {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text);
      line-height: 1.4;
    }

    .materi-card small {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* ============================
       FOOTER
    ============================ */
    .footer {
      text-align: center;
      padding: 24px;
      color: var(--text-muted);
      font-size: 0.8rem;
      border-top: 1px solid var(--border);
    }
    .footer span { color: var(--primary); font-weight: 600; }

    /* ============================
       SIDEBAR OVERLAY (mobile)
    ============================ */
    .sidebar-overlay {
      display: none;
      position: fixed; inset: 0;
      background: rgba(0,0,0,0.4);
      z-index: 999;
    }

    /* ============================
       RESPONSIVE
    ============================ */
    @media (max-width: 1100px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 900px) {
      .contact-grid { grid-template-columns: 1fr; }
      .materi-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      :root { --sidebar-w: 260px; }

      .left-sidebar {
        transform: translateX(-100%);
      }

      .left-sidebar.open {
        transform: translateX(0);
      }

      .sidebar-overlay.active { display: block; }

      .app-header { left: 0; }

      .body-wrapper { margin-left: 0; }

      .content-area { padding: 20px 16px 48px; }

      .hero-section { padding: 32px 24px; flex-direction: column; }
      .hero-image { display: none; }

      .grid-2 { grid-template-columns: 1fr; }

      #about { padding: 28px 20px; }
      #contact { padding: 28px 20px; }
      #materi { padding: 28px 20px; }

      .about-images-col { flex-direction: row; overflow-x: auto; }
      .leaflet-thumb { min-width: 200px; }

      .materi-grid { grid-template-columns: 1fr; }

      .theme-toggle .theme-label { display: none; }
    }

    @media (max-width: 480px) {
      .grid-4 { grid-template-columns: 1fr 1fr; }
      .hero-text h1 { font-size: 1.6rem; }
      .hero-actions { flex-direction: column; }
      .hero-actions .btn { width: 100%; justify-content: center; }
    }

    /* ============================
       ANIMATIONS
    ============================ */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(24px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    .fade-up { animation: fadeUp 0.6s ease forwards; }
    .fade-up-1 { animation-delay: 0.1s; opacity: 0; }
    .fade-up-2 { animation-delay: 0.2s; opacity: 0; }
    .fade-up-3 { animation-delay: 0.3s; opacity: 0; }
    .fade-up-4 { animation-delay: 0.4s; opacity: 0; }

    /* scrollbar global */
    ::-webkit-scrollbar { width: 6px; height: 6px; }
    ::-webkit-scrollbar-track { background: transparent; }
    ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
    ::-webkit-scrollbar-thumb:hover { background: var(--primary); }