:root {
      --bg-dark: #080c14;
      --bg-card: #111726;
      --bg-card-hover: #162035;
      --bg-surface: #192238;
      --border-color: rgba(255, 255, 255, 0.09);
      --border-color-glow: rgba(0, 230, 118, 0.35);
      
      --accent-green: #00e676;
      --accent-green-rgb: 0, 230, 118;
      --accent-blue: #00e5ff;
      --accent-purple: #818cf8;
      --accent-orange: #f59e0b;
      --accent-red: #f43f5e;
      --accent-red-hover: #e11d48;
      
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-xl: 22px;
      
      --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.4);
      --shadow-glow: 0 0 25px rgba(0, 230, 118, 0.2);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: 'Plus Jakarta Sans', sans-serif;
      background-color: var(--bg-dark);
      background-image: 
        radial-gradient(circle at 15% 20%, rgba(0, 230, 118, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 85% 80%, rgba(0, 229, 255, 0.05) 0%, transparent 45%),
        radial-gradient(circle at 50% 50%, rgba(129, 140, 248, 0.03) 0%, transparent 60%);
      background-attachment: fixed;
      color: var(--text-main);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 15px;
    }

    /* BARRA SUPERIOR / HEADER */
    header {
      width: 100%;
      max-width: 1200px;
      margin-bottom: 20px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 15px;
    }

    .header-top {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-color);
    }

    .brand-container {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .brand-icon-box {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, rgba(0, 230, 118, 0.2), rgba(0, 229, 255, 0.15));
      border: 1px solid var(--accent-green);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-green);
      font-size: 1.4rem;
      box-shadow: 0 0 15px rgba(0, 230, 118, 0.25);
    }

    .brand-text h1 {
      font-family: 'Orbitron', sans-serif;
      font-size: 1.55rem;
      font-weight: 800;
      letter-spacing: 1px;
      background: linear-gradient(90deg, #ffffff 0%, var(--accent-green) 50%, var(--accent-blue) 100%);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      text-shadow: 0 0 20px rgba(0, 230, 118, 0.2);
      line-height: 1.15;
    }

    .brand-text .tagline {
      font-size: 0.8rem;
      color: var(--text-muted);
      letter-spacing: 0.4px;
      margin-top: 2px;
    }

    /* Selector de sessió activa */
    .session-badge-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      padding: 7px 14px;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .session-badge-btn:hover {
      border-color: var(--accent-blue);
      background: var(--bg-card-hover);
      box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
    }

    .session-indicator-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-green);
      box-shadow: 0 0 8px var(--accent-green);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.2); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }

    /* NAVEGACIÓ DE PESTANYES */
    .nav-tabs {
      display: flex;
      gap: 8px;
      background: rgba(17, 23, 38, 0.8);
      backdrop-filter: blur(10px);
      padding: 6px;
      border-radius: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-subtle);
      flex-wrap: wrap;
      justify-content: center;
    }

    .nav-tab-btn {
      padding: 9px 20px;
      border-radius: 24px;
      border: none;
      background: transparent;
      color: var(--text-muted);
      font-size: 0.92rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 8px;
      transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav-tab-btn:hover {
      color: var(--text-main);
      background: rgba(255, 255, 255, 0.05);
    }

    .nav-tab-btn.active {
      background: linear-gradient(135deg, rgba(0, 230, 118, 0.25), rgba(0, 229, 255, 0.15));
      color: var(--accent-green);
      border: 1px solid rgba(0, 230, 118, 0.4);
      box-shadow: 0 0 14px rgba(0, 230, 118, 0.2);
    }

    .nav-tab-btn.admin-tab.active {
      background: linear-gradient(135deg, rgba(129, 140, 248, 0.25), rgba(0, 229, 255, 0.15));
      color: var(--accent-purple);
      border-color: rgba(129, 140, 248, 0.4);
      box-shadow: 0 0 14px rgba(129, 140, 248, 0.2);
    }

    /* CONTENIDOR PRINCIPAL */
    .container {
      width: 100%;
      max-width: 1200px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-subtle);
      position: relative;
    }

    /* VISTA MODERADOR (PROJECCIÓ) */
    .dashboard {
      display: grid;
      grid-template-columns: 320px 1fr;
      gap: 25px;
    }

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

    .qr-card {
      background: var(--bg-surface);
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      box-shadow: var(--shadow-subtle);
    }

    .qr-card h3 {
      font-family: 'Orbitron', sans-serif;
      font-size: 1.15rem;
      letter-spacing: 0.5px;
      margin-bottom: 6px;
    }

    .qr-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .qr-box {
      background: white;
      padding: 10px;
      border-radius: var(--radius-md);
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      margin-bottom: 14px;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    /* DESPLEGABLE DE SESSIONS SOTA EL QR */
    .qr-session-dropdown-box {
      width: 100%;
      margin: 10px 0 14px 0;
      padding: 12px 14px;
      background: rgba(0, 0, 0, 0.35);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      display: flex;
      flex-direction: column;
      gap: 8px;
      text-align: left;
    }

    .switcher-label {
      font-size: 0.8rem;
      color: var(--text-muted);
      font-weight: 700;
      letter-spacing: 0.3px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .select-wrapper {
      display: flex;
      align-items: center;
      gap: 8px;
      width: 100%;
    }

    .session-dropdown {
      flex: 1;
      padding: 10px 12px;
      border-radius: var(--radius-sm);
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      color: var(--accent-green);
      font-family: 'Orbitron', sans-serif;
      font-size: 0.92rem;
      font-weight: 700;
      outline: none;
      cursor: pointer;
      transition: all 0.2s ease;
      appearance: none;
      -webkit-appearance: none;
      background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2300e676' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
      background-repeat: no-repeat;
      background-position: right 10px center;
      background-size: 16px;
      padding-right: 32px;
    }

    .session-dropdown:focus {
      border-color: var(--accent-green);
      box-shadow: 0 0 10px rgba(0, 230, 118, 0.3);
    }

    .session-dropdown option {
      background: #111726;
      color: var(--text-main);
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-size: 0.9rem;
      font-weight: 500;
      padding: 8px;
    }

    .btn-add-session {
      padding: 10px 12px;
      border-radius: var(--radius-sm);
      background: rgba(0, 230, 118, 0.15);
      border: 1px solid rgba(0, 230, 118, 0.4);
      color: var(--accent-green);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      transition: all 0.2s ease;
    }

    .btn-add-session:hover {
      background: var(--accent-green);
      color: #000;
      box-shadow: 0 0 10px rgba(0, 230, 118, 0.3);
    }

    .btn-text-edit {
      background: transparent;
      border: none;
      color: var(--accent-blue);
      font-size: 0.78rem;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .btn-text-edit:hover {
      text-decoration: underline;
    }

    .qr-actions {
      display: flex;
      flex-direction: column;
      gap: 8px;
      width: 100%;
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: all 0.2s ease;
    }

    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(255, 255, 255, 0.2);
    }

    /* TAULELL DE CONTROLS */
    .controls-panel {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .stats-bar {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
      gap: 12px;
    }

    .stat-card {
      background: var(--bg-surface);
      padding: 12px 14px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
      transition: transform 0.2s ease;
    }

    .stat-card:hover {
      transform: translateY(-2px);
    }

    .stat-label {
      font-size: 0.78rem;
      color: var(--text-muted);
      font-weight: 600;
      letter-spacing: 0.3px;
      margin-bottom: 4px;
    }

    .stat-value {
      font-family: 'Orbitron', sans-serif;
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--accent-green);
    }

    .stat-card.stat-l4 .stat-value { color: var(--accent-orange); }
    .stat-card.stat-l3 .stat-value { color: #34d399; }
    .stat-card.stat-l2 .stat-value { color: var(--accent-blue); }
    .stat-card.stat-l1 .stat-value { color: #94a3b8; }

    /* Barra d'accions de moderació */
    .moderator-actions-bar {
      background: var(--bg-surface);
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    .input-group {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .input-group label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-muted);
      white-space: nowrap;
    }

    .input-number {
      width: 70px;
      padding: 8px 10px;
      border-radius: var(--radius-sm);
      background: var(--bg-dark);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      font-size: 1rem;
      font-weight: 700;
      text-align: center;
      outline: none;
    }

    .input-number:focus {
      border-color: var(--accent-green);
      box-shadow: 0 0 8px rgba(0, 230, 118, 0.3);
    }

    .btn-main {
      padding: 10px 18px;
      background: linear-gradient(135deg, var(--accent-green), #00c853);
      color: #041407;
      font-weight: 700;
      font-size: 0.95rem;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: all 0.2s ease;
      box-shadow: 0 4px 14px rgba(0, 230, 118, 0.3);
    }

    .btn-main:hover {
      background: linear-gradient(135deg, #00ff84, #00e676);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(0, 230, 118, 0.4);
    }

    .btn-danger {
      padding: 10px 16px;
      background: rgba(244, 63, 94, 0.15);
      border: 1px solid rgba(244, 63, 94, 0.4);
      color: var(--accent-red);
      font-weight: 600;
      font-size: 0.88rem;
      border-radius: var(--radius-sm);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: all 0.2s ease;
    }

    .btn-danger:hover {
      background: var(--accent-red);
      color: white;
      box-shadow: 0 4px 14px rgba(244, 63, 94, 0.4);
    }

    .btn-warning {
      padding: 10px 16px;
      background: rgba(245, 158, 11, 0.15);
      border: 1px solid rgba(245, 158, 11, 0.4);
      color: var(--accent-orange);
      font-weight: 600;
      font-size: 0.88rem;
      border-radius: var(--radius-sm);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: all 0.2s ease;
    }

    .btn-warning:hover {
      background: var(--accent-orange);
      color: #000;
    }

    /* GRAELLA D'EQUIPS */
    .groups-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
      gap: 16px;
      margin-top: 10px;
    }

    .group-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-top: 4px solid var(--accent-blue);
      border-radius: var(--radius-md);
      padding: 16px;
      box-shadow: var(--shadow-subtle);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .group-card:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
    }

    .group-card.has-advanced {
      border-top-color: var(--accent-green);
    }

    .group-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
      padding-bottom: 8px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .group-title {
      font-family: 'Orbitron', sans-serif;
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .member-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .member-item {
      padding: 7px 10px;
      border-radius: var(--radius-sm);
      background: rgba(0, 0, 0, 0.25);
      border: 1px solid rgba(255, 255, 255, 0.03);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.92rem;
    }

    /* BADGES DE NIVELL */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 3px 8px;
      border-radius: 4px;
      font-size: 0.76rem;
      font-weight: 700;
      letter-spacing: 0.3px;
      white-space: nowrap;
    }

    .badge-1 { background: rgba(148, 163, 184, 0.2); color: #cbd5e1; border: 1px solid rgba(148, 163, 184, 0.3); }
    .badge-2 { background: rgba(0, 229, 255, 0.15); color: #7dd3fc; border: 1px solid rgba(0, 229, 255, 0.3); }
    .badge-3 { background: rgba(16, 185, 129, 0.18); color: #6ee7b7; border: 1px solid rgba(16, 185, 129, 0.35); }
    .badge-4 { background: rgba(245, 158, 11, 0.2); color: #fde047; border: 1px solid rgba(245, 158, 11, 0.4); }

    /* VISTA DEL PARTICIPANT */
    .student-view-container {
      max-width: 520px;
      margin: 10px auto;
    }

    .form-group {
      margin-bottom: 22px;
    }

    label {
      display: block;
      margin-bottom: 8px;
      font-weight: 600;
      color: var(--accent-blue);
      font-size: 0.95rem;
    }

    input[type="text"], input[type="password"] {
      width: 100%;
      padding: 13px 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      background: var(--bg-dark);
      color: white;
      font-size: 1rem;
      outline: none;
      transition: all 0.2s ease;
    }

    input[type="text"]:focus, input[type="password"]:focus {
      border-color: var(--accent-blue);
      box-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
    }

    .level-options {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .level-btn {
      padding: 14px 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      background: var(--bg-surface);
      color: white;
      cursor: pointer;
      text-align: left;
      transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }

    .level-btn:hover {
      background: var(--bg-card-hover);
      border-color: rgba(255, 255, 255, 0.2);
      transform: translateX(4px);
    }

    .level-btn.selected {
      border-color: var(--accent-green);
      background: rgba(0, 230, 118, 0.15);
      box-shadow: 0 0 15px rgba(0, 230, 118, 0.2);
    }

    .level-info {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .level-title {
      font-weight: 600;
      font-size: 0.95rem;
    }

    .level-desc {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .assigned-view {
      text-align: center;
      padding: 30px 15px;
      background: var(--bg-surface);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-subtle);
    }

    .group-badge-large {
      font-family: 'Orbitron', sans-serif;
      font-size: 3.2rem;
      font-weight: 800;
      color: var(--accent-green);
      margin: 20px 0;
      text-shadow: 0 0 25px rgba(0, 230, 118, 0.5);
      letter-spacing: 2px;
    }

    /* PANELL D'ADMINISTRACIÓ */
    .admin-panel {
      display: flex;
      flex-direction: column;
      gap: 22px;
    }

    .admin-header-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      background: var(--bg-surface);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .admin-title-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .admin-title-area h2 {
      font-family: 'Orbitron', sans-serif;
      font-size: 1.25rem;
      color: var(--accent-purple);
    }

    .sessions-shelf {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .shelf-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-muted);
      letter-spacing: 0.3px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .sessions-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      gap: 14px;
    }

    .session-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 14px 16px;
      cursor: pointer;
      transition: all 0.2s ease;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .session-card:hover {
      background: var(--bg-card-hover);
      border-color: rgba(255, 255, 255, 0.2);
    }

    .session-card.active-session {
      border-color: var(--accent-purple);
      background: rgba(129, 140, 248, 0.12);
      box-shadow: 0 0 16px rgba(129, 140, 248, 0.25);
    }

    .session-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .session-card-name {
      font-family: 'Orbitron', sans-serif;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .session-card-meta {
      font-size: 0.84rem;
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
    }

    /* TAULA DE DADES */
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    table.data-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.9rem;
    }

    table.data-table th {
      background: rgba(0, 0, 0, 0.35);
      padding: 12px 16px;
      font-weight: 700;
      color: var(--text-muted);
      font-size: 0.78rem;
      letter-spacing: 0.4px;
      border-bottom: 1px solid var(--border-color);
    }

    table.data-table td {
      padding: 12px 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      color: var(--text-main);
    }

    table.data-table tr:hover td {
      background: rgba(255, 255, 255, 0.02);
    }

    .action-icon-btn {
      background: transparent;
      border: none;
      color: var(--text-dim);
      padding: 6px;
      border-radius: 4px;
      cursor: pointer;
      font-size: 0.95rem;
      transition: all 0.15s ease;
    }

    .action-icon-btn:hover {
      color: var(--accent-red);
      background: rgba(244, 63, 94, 0.15);
    }

    /* FILTRES I CERCA */
    .filter-bar {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 12px;
    }

    .search-input {
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      background: var(--bg-dark);
      color: white;
      font-size: 0.9rem;
      min-width: 220px;
      outline: none;
    }

    .search-input:focus {
      border-color: var(--accent-purple);
    }

    /* MODAL DE CONTRASENYA */
    .modal-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background: rgba(0, 0, 0, 0.75);
      backdrop-filter: blur(8px);
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 999;
      padding: 20px;
    }

    .modal-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      max-width: 440px;
      width: 100%;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
      text-align: center;
    }

    .modal-icon {
      width: 56px;
      height: 56px;
      background: rgba(129, 140, 248, 0.15);
      border: 1px solid var(--accent-purple);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      font-size: 1.5rem;
      color: var(--accent-purple);
    }

    .modal-title {
      font-family: 'Orbitron', sans-serif;
      font-size: 1.25rem;
      margin-bottom: 8px;
    }

    .modal-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .password-input-wrap {
      position: relative;
      margin-bottom: 16px;
    }

    .toggle-pwd-btn {
      position: absolute;
      right: 12px;
      top: 50%;
      transform: translateY(-50%);
      background: transparent;
      border: none;
      color: var(--text-dim);
      cursor: pointer;
      font-size: 1rem;
    }

    .modal-error {
      color: var(--accent-red);
      font-size: 0.85rem;
      margin-bottom: 12px;
      display: none;
    }

    .modal-buttons {
      display: flex;
      gap: 10px;
    }

    .btn-full {
      flex: 1;
      padding: 12px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      cursor: pointer;
    }

    /* TOAST DE NOTIFICACIONS */
    .toast-container {
      position: fixed;
      bottom: 24px;
      right: 24px;
      z-index: 1000;
      display: flex;
      flex-direction: column;
      gap: 10px;
      pointer-events: none;
    }

    .toast {
      pointer-events: auto;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-left: 4px solid var(--accent-green);
      padding: 12px 18px;
      border-radius: var(--radius-sm);
      color: var(--text-main);
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      gap: 10px;
      box-shadow: 0 8px 24px rgba(0,0,0,0.5);
      animation: slideIn 0.3s ease forwards;
    }

    .toast.toast-error { border-left-color: var(--accent-red); }
    .toast.toast-info { border-left-color: var(--accent-blue); }

    @keyframes slideIn {
      from { transform: translateX(100%); opacity: 0; }
      to { transform: translateX(0); opacity: 1; }
    }

    /* FOOTER */
    footer {
      margin-top: 30px;
      text-align: center;
      font-size: 0.82rem;
      color: var(--text-dim);
    }

    /* MICRO:BITADA VISUAL THEME */
    :root {
      --bg-dark: #f1f1d5;
      --bg-card: #fffef3;
      --bg-card-hover: #f8f3dc;
      --bg-surface: #fffdf0;
      --border-color: rgba(37, 89, 79, 0.22);
      --border-color-glow: rgba(52, 139, 128, 0.35);
      --accent-green: #328c82;
      --accent-green-rgb: 50, 140, 130;
      --accent-blue: #388e87;
      --accent-purple: #c55370;
      --accent-orange: #d59b18;
      --accent-red: #c84f5a;
      --accent-red-hover: #ad3948;
      --text-main: #1d2925;
      --text-muted: #51645d;
      --text-dim: #718079;
      --radius-sm: 5px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --radius-xl: 16px;
      --shadow-subtle: 0 5px 16px rgba(49, 77, 58, 0.10);
      --shadow-glow: 0 0 18px rgba(50, 140, 130, 0.14);
    }

    body {
      position: relative;
      overflow-x: hidden;
      padding: 22px clamp(14px, 3vw, 38px);
      background-color: var(--bg-dark);
      background-image:
        radial-gradient(rgba(47, 113, 103, 0.09) 0.7px, transparent 0.7px),
        linear-gradient(135deg, rgba(255, 255, 255, 0.18), transparent 55%);
      background-size: 15px 15px, 100% 100%;
      color: var(--text-main);
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -1;
      pointer-events: none;
      background:
        radial-gradient(circle at -3% 30%, transparent 0 54px, rgba(197, 83, 112, 0.7) 56px 63px, transparent 65px),
        radial-gradient(circle at 98% 52%, transparent 0 72px, rgba(197, 83, 112, 0.65) 74px 81px, transparent 83px),
        radial-gradient(circle at 68% -9%, transparent 0 65px, rgba(197, 83, 112, 0.62) 67px 74px, transparent 76px);
    }

    header, .container, footer {
      max-width: 1280px;
    }

    header {
      gap: 18px;
      margin-bottom: 18px;
    }

    .header-top {
      padding: 8px 0 16px;
      border-bottom: 2px solid rgba(50, 140, 130, 0.35);
    }

    .brand-icon-box {
      background: #328c82;
      border: 2px solid #1e625a;
      border-radius: 8px;
      color: #fff8df;
      box-shadow: 3px 3px 0 rgba(30, 98, 90, 0.22);
    }

    .brand-text h1,
    .admin-title-area h2,
    .qr-card h3,
    .group-title,
    .session-card-name,
    .modal-title,
    .group-badge-large {
      font-family: 'Lilita One', 'Trebuchet MS', sans-serif;
      letter-spacing: 0;
      font-weight: 400;
    }

    .brand-text h1 {
      color: #328c82;
      background: none;
      -webkit-text-fill-color: currentColor;
      text-shadow: none;
      font-size: clamp(1.35rem, 3vw, 2rem);
    }

    .brand-text .tagline {
      color: #53645c;
      letter-spacing: 0;
    }

    .session-badge-btn,
    .nav-tabs,
    .container,
    .qr-card,
    .stat-card,
    .moderator-actions-bar,
    .group-card,
    .assigned-view,
    .admin-header-bar,
    .session-card,
    .table-container,
    .modal-card {
      box-shadow: 0 4px 12px rgba(49, 77, 58, 0.08);
    }

    .session-badge-btn {
      background: #fffdf0;
      border-color: rgba(50, 140, 130, 0.34);
      color: #263a34;
      border-radius: 7px;
    }

    .session-indicator-dot {
      animation: none;
    }

    .nav-tabs {
      gap: 4px;
      padding: 5px;
      border-radius: 8px;
      background: rgba(255, 254, 243, 0.9);
      border-color: rgba(37, 89, 79, 0.2);
      backdrop-filter: none;
    }

    .nav-tab-btn {
      border-radius: 5px;
      color: #52665e;
    }

    .nav-tab-btn.active,
    .nav-tab-btn.admin-tab.active {
      color: #fffdf0;
      background: #328c82;
      border: 1px solid #246f67;
      box-shadow: none;
    }

    .container {
      padding: clamp(12px, 2vw, 24px);
      background: rgba(255, 254, 243, 0.86);
      border: 1px solid rgba(37, 89, 79, 0.2);
      border-radius: 10px;
      box-shadow: 0 8px 24px rgba(49, 77, 58, 0.09);
    }

    .qr-card,
    .stat-card,
    .moderator-actions-bar,
    .group-card,
    .assigned-view,
    .admin-header-bar,
    .session-card,
    .table-container,
    .qr-session-dropdown-box {
      background: #fffdf0;
      border-color: rgba(37, 89, 79, 0.2);
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(49, 77, 58, 0.08);
    }

    .qr-card { border-top: 5px solid #d9a719; }
    .qr-card h3 { color: #203a34; }
    .qr-card p, .stat-label, .input-group label, .switcher-label,
    .session-card-meta, .level-desc, .modal-desc { color: #586a62; }

    .qr-box {
      border: 4px solid #328c82;
      border-radius: 8px;
      box-shadow: 3px 3px 0 rgba(30, 98, 90, 0.22);
    }

    .qr-session-dropdown-box { background: #f6f4df; }

    .session-dropdown,
    .input-number,
    input[type="text"],
    input[type="password"],
    .search-input {
      color: #1d2925;
      background-color: #fffef7;
      border-color: rgba(37, 89, 79, 0.3);
      border-radius: 5px;
    }

    .session-dropdown { color: #28766e; }
    .session-dropdown option { background: #fffef7; color: #1d2925; }
    input::placeholder, .search-input::placeholder { color: #849088; }

    .stat-value { color: #328c82; }
    .stat-card.stat-l1 .stat-value { color: #718079; }
    .stat-card.stat-l2 .stat-value { color: #388e87; }
    .stat-card.stat-l3 .stat-value { color: #4b986a; }
    .stat-card.stat-l4 .stat-value { color: #c58b0e; }

    .btn-main {
      background: #e8b51e;
      color: #1e2924;
      border: 1px solid #b8860b;
      border-radius: 5px;
      box-shadow: 3px 3px 0 #328c82;
    }

    .btn-main:hover {
      background: #f2c83e;
      color: #1e2924;
      transform: translate(-1px, -1px);
      box-shadow: 4px 4px 0 #328c82;
    }

    .btn-secondary {
      color: #285f58;
      background: #f4f2df;
      border-color: rgba(37, 89, 79, 0.25);
      border-radius: 5px;
    }

    .btn-secondary:hover { background: #e5eee2; border-color: #328c82; }
    .btn-warning { color: #98700b; background: #fbf1cc; border-color: #d5aa35; border-radius: 5px; }
    .btn-warning:hover { color: #1d2925; background: #e8b51e; }
    .btn-danger { color: #ad3948; background: #f9e5e4; border-color: #d88b8c; border-radius: 5px; }
    .btn-danger:hover { color: #fff; background: #c84f5a; }

    .group-card { border-top: 4px solid #388e87; }
    .group-card.has-advanced { border-top-color: #d5a21b; }
    .member-item { background: #f6f4e7; border-color: rgba(37, 89, 79, 0.1); color: #263a34; }

    .badge-1 { background: #eceee7; color: #59655e; border-color: #cbd0c4; }
    .badge-2 { background: #e2f0ed; color: #28766e; border-color: #acd2cb; }
    .badge-3 { background: #e6f1df; color: #4a7a48; border-color: #b9d0ad; }
    .badge-4 { background: #fbf0cb; color: #946d0d; border-color: #e6ca72; }

    label { color: #328c82; }
    .level-btn {
      color: #263a34;
      background: #fffdf0;
      border-color: rgba(37, 89, 79, 0.22);
      border-radius: 7px;
    }

    .level-btn:hover { background: #f3f2df; border-color: #328c82; }
    .level-btn.selected { background: #e3f0e7; border-color: #328c82; box-shadow: inset 4px 0 #328c82; }
    .group-badge-large { color: #328c82; text-shadow: none; }
    .session-card.active-session { background: #e8f0df; border-color: #328c82; box-shadow: inset 4px 0 #328c82; }
    .admin-title-area h2 { color: #b34a64; }
    .admin-header-bar code { color: #328c82 !important; }

    table.data-table th { color: #42574e; background: #eeeeda; }
    table.data-table td { color: #263a34; border-bottom-color: rgba(37, 89, 79, 0.12); }
    table.data-table tr:hover td { background: rgba(50, 140, 130, 0.06); }
    .action-icon-btn { color: #718079; }
    .modal-overlay { background: rgba(34, 47, 40, 0.58); }
    .modal-card { background: #fffdf0; border-color: rgba(37, 89, 79, 0.25); }
    .modal-icon { color: #328c82; background: #e4f0e9; border-color: #328c82; }
    .toast { color: #203a34; background: #fffdf0; border-color: rgba(37, 89, 79, 0.22); }

    footer {
      width: 100%;
      color: #596a61;
    }

    .footer-logos {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: clamp(24px, 6vw, 72px);
      flex-wrap: wrap;
      margin: 22px 0;
    }

    .footer-logos img { max-width: min(42vw, 360px) !important; max-height: 74px !important; }

    @media (max-width: 650px) {
      body { padding: 14px 10px; }
      .header-top { justify-content: center; }
      .brand-container { width: 100%; justify-content: center; }
      .brand-text h1 { font-size: 1.25rem; }
      .session-badge-btn { max-width: 100%; }
      .nav-tabs { width: 100%; border-radius: 7px; }
      .nav-tab-btn { flex: 1 1 42%; justify-content: center; padding: 9px 8px; }
      .moderator-actions-bar { align-items: stretch; }
      .moderator-actions-bar > * { justify-content: center; }
      .footer-logos { gap: 18px; }
      .footer-logos img { max-width: min(44vw, 220px) !important; max-height: 56px !important; }
    }