<style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', 'Segoe UI', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            padding: 40px;
            max-width: 1400px;
            margin: 0 auto;
            animation: slideIn 0.6s ease-out;
        }

        @keyframes slideIn {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .header {
            text-align: center;
            margin-bottom: 30px;
        }

        .header h1 {
            color: #2c3e50;
            font-size: 2.5rem;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .header p {
            color: #7f8c8d;
            font-size: 1.1rem;
        }

        /* LOGIN STYLES */
        .login-section {
            background: white;
            padding: 50px;
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            max-width: 500px;
            margin: 0 auto;
            text-align: center;
        }

        .login-section h3 {
            font-size: 1.8rem;
            color: #2c3e50;
            margin-bottom: 10px;
            font-weight: 300;
        }

        .form-group {
            margin-bottom: 20px;
            text-align: left;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #2c3e50;
            font-weight: 600;
        }

        .form-group input, .form-group select {
            width: 100%;
            padding: 15px;
            border: 2px solid #e1e8ed;
            border-radius: 10px;
            font-size: 16px;
            transition: all 0.3s ease;
            font-family: 'Inter', sans-serif;
        }

        .form-group input:focus, .form-group select:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        /* MEJORA ESPECÍFICA PARA EL INPUT DE FECHA */
        .date-input-wrapper {
            position: relative;
            cursor: pointer;
        }

        .date-input-wrapper input[type="date"] {
            cursor: pointer;
            position: relative;
            padding-right: 45px; /* Espacio para el icono personalizado */
        }

        /* Ocultar el icono nativo del calendario en algunos navegadores */
        .date-input-wrapper input[type="date"]::-webkit-calendar-picker-indicator {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            width: auto;
            height: auto;
            color: transparent;
            background: transparent;
            cursor: pointer;
            z-index: 2;
        }

        /* Agregar icono personalizado */
        .date-input-wrapper::after {
            content: '\f073'; /* Icono de calendario de Font Awesome */
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #667eea;
            pointer-events: none;
            z-index: 1;
        }

        /* Asegurar que el input sea completamente clickeable */
        .date-input-wrapper input[type="date"] {
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
        }

        /* Estilo especial cuando está enfocado */
        .date-input-wrapper input[type="date"]:focus {
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .date-input-wrapper input[type="date"]:focus + .date-icon {
            color: #667eea;
        }

        .btn {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin: 5px;
            font-family: 'Inter', sans-serif;
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
        }

        .btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }

        .btn-danger { background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%); }
        .btn-success { background: linear-gradient(135deg, #4caf50 0%, #45a049 100%); }
        .btn-warning { background: linear-gradient(135deg, #ff9800 0%, #f57c00 100%); }
        .btn-info { background: linear-gradient(135deg, #2196f3 0%, #1976d2 100%); }

        /* MAIN SECTION */
        .main-section {
            display: none;
        }

        .main-section.active {
            display: block;
        }

        .user-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px;
            background: rgba(102, 126, 234, 0.1);
            border-radius: 15px;
            margin-bottom: 30px;
        }

        .status-badge {
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 14px;
        }

        .status-badge.admin {
            background: #ff6b6b;
            color: white;
        }

        .status-badge.user {
            background: #4caf50;
            color: white;
        }

        /* RESERVATION FORM */
        .reservation-form {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
            margin-bottom: 30px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .resource-selector {
            text-align: center;
            margin-bottom: 20px;
        }

        .resource-btn {
            padding: 12px 24px;
            margin: 0 10px;
            border: none;
            border-radius: 10px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .resource-btn.active {
            background: linear-gradient(135deg, #4caf50 0%, #45a049 100%);
            color: white;
        }

        .resource-btn:not(.active) {
            background: #f8f9fa;
            color: #666;
        }

        /* SELECTED TIME SLOT INDICATOR */
        .selected-time-indicator {
            background: rgba(102, 126, 234, 0.1);
            border: 2px solid #667eea;
            border-radius: 10px;
            padding: 15px;
            margin-bottom: 20px;
            text-align: center;
            font-weight: 600;
            color: #2c3e50;
        }

        .selected-time-indicator.empty {
            background: rgba(255, 152, 0, 0.1);
            border-color: #ff9800;
            color: #e65100;
        }

        /* SCHEDULE GRID */
        .schedule-section h3 {
            text-align: center;
            color: red;
            margin-bottom: 40px;
        }

        .schedule-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            margin-top: 20px;
        }

        .time-slot {
            background: white;
            padding: 20px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            border-left: 5px solid #667eea;
            cursor: pointer;
            position: relative;
        }

        .time-slot:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }

        .time-slot.available {
            border-left-color: #4caf50;
            background: linear-gradient(135deg, #f1f8e9 0%, #f9fbe7 100%);
        }

        .time-slot.available:hover {
            background: linear-gradient(135deg, #e8f5e8 0%, #f1f8e9 100%);
            border-left-color: #2e7d32;
        }

        /* MULTIPLE SELECTION STYLES */
        .time-slot.selected {
            border-left-color: #667eea;
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
            position: relative;
        }

        .time-slot.selected::before {
            content: "✓";
            position: absolute;
            top: 10px;
            right: 15px;
            background: #667eea;
            color: white;
            border-radius: 50%;
            width: 25px;
            height: 25px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
            z-index: 10;
        }

        .time-slot.reserved {
            border-left-color: #ff9800;
            background: linear-gradient(135deg, #fff3e0 0%, #ffeaa7 100%);
            cursor: not-allowed;
        }

        .time-slot.confirmed {
            border-left-color: #2196f3;
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
            cursor: not-allowed;
        }

        .time-slot.no-show {
            border-left-color: #f44336;
            background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
            cursor: not-allowed;
        }

        .time-slot.clickable-available {
            cursor: pointer;
        }

        .time-slot.clickable-available::after {
            content: "👆 Haz clic para seleccionar";
            position: absolute;
            bottom: 20px;
            right: 15px;
            font-size: 12px;
            color: #4caf50;
            font-weight: 600;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .time-slot.clickable-available:hover::after {
            opacity: 1;
        }

        .time-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .time-text {
            font-size: 1.3rem;
            font-weight: bold;
            color: #2c3e50;
        }

        .status-pill {
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
        }

        .status-pill.available { background: #4caf50; color: white; }
        .status-pill.selected { background: #667eea; color: white; }
        .status-pill.reserved { background: #ff9800; color: white; }
        .status-pill.confirmed { background: #2196f3; color: white; }
        .status-pill.no-show { background: #f44336; color: white; }

        .reservation-details {
            margin-bottom: 15px;
            color: #555;
            line-height: 1.6;
        }

        .action-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .action-buttons .btn {
            padding: 8px 16px;
            font-size: 14px;
        }

        /* TOAST NOTIFICATIONS - ZONA CENTRAL DE CONTENIDO */
        .toast-container {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 9999;
            max-width: 600px;
            width: 90%;
            pointer-events: none;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .toast {
            background: white;
            border-radius: 20px;
            padding: 24px 32px;
            margin-bottom: 16px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
            border-left: 8px solid;
            display: flex;
            align-items: center;
            gap: 20px;
            min-width: 400px;
            max-width: 600px;
            opacity: 0;
            transform: scale(0.7) translateY(-30px);
            transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            pointer-events: auto;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(15px);
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .toast.show {
            opacity: 1;
            transform: scale(1) translateY(0);
        }

        .toast.hide {
            opacity: 0;
            transform: scale(0.8) translateY(-20px);
            margin-bottom: 0;
            padding-top: 0;
            padding-bottom: 0;
            max-height: 0;
        }

        .toast-success {
            border-left-color: #4caf50;
            background: linear-gradient(135deg, #f1f8e9 0%, #e8f5e8 100%);
            box-shadow: 0 20px 60px rgba(76, 175, 80, 0.4);
        }

        .toast-error {
            border-left-color: #f44336;
            background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
            box-shadow: 0 20px 60px rgba(244, 67, 54, 0.4);
        }

        .toast-warning {
            border-left-color: #ff9800;
            background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
            box-shadow: 0 20px 60px rgba(255, 152, 0, 0.4);
        }

        .toast-info {
            border-left-color: #2196f3;
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
            box-shadow: 0 20px 60px rgba(33, 150, 243, 0.4);
        }

        .toast-icon {
            font-size: 28px;
            flex-shrink: 0;
            animation: bounce 0.8s ease-out 0.3s both;
        }

        @keyframes bounce {
            0% { transform: scale(0) rotate(-180deg); }
            50% { transform: scale(1.3) rotate(-90deg); }
            100% { transform: scale(1) rotate(0deg); }
        }

        .toast-success .toast-icon { color: #4caf50; }
        .toast-error .toast-icon { color: #f44336; }
        .toast-warning .toast-icon { color: #ff9800; }
        .toast-info .toast-icon { color: #2196f3; }

        .toast-content {
            flex: 1;
            font-weight: 700;
            font-size: 18px;
            line-height: 1.4;
            color: #2c3e50;
            text-align: center;
            font-family: 'Inter', sans-serif;
        }

        .toast-close {
            background: rgba(255, 255, 255, 0.2);
            border: 2px solid rgba(255, 255, 255, 0.3);
            font-size: 16px;
            color: #666;
            cursor: pointer;
            padding: 8px;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

        .toast-close:hover {
            background: rgba(255, 255, 255, 0.4);
            color: #333;
            transform: scale(1.1) rotate(90deg);
            border-color: rgba(255, 255, 255, 0.5);
        }

        .toast-progress {
            position: absolute;
            bottom: 0;
            left: 0;
            height: 6px;
            background: rgba(255, 255, 255, 0.4);
            border-radius: 0 0 20px 20px;
            transition: width linear;
        }

        .toast-success .toast-progress { background: #4caf50; }
        .toast-error .toast-progress { background: #f44336; }
        .toast-warning .toast-progress { background: #ff9800; }
        .toast-info .toast-progress { background: #2196f3; }

        /* EFECTO DE PULSACIÓN MEJORADO */
        .toast-error {
            animation: pulse-error 2.5s infinite;
        }

        .toast-warning {
            animation: pulse-warning 3.5s infinite;
        }

        @keyframes pulse-error {
            0%, 100% { 
                box-shadow: 0 20px 60px rgba(244, 67, 54, 0.4);
                transform: scale(1) translateY(0);
            }
            50% { 
                box-shadow: 0 25px 80px rgba(244, 67, 54, 0.6), 0 0 30px rgba(244, 67, 54, 0.5);
                transform: scale(1.02) translateY(-2px);
            }
        }

        @keyframes pulse-warning {
            0%, 100% { 
                box-shadow: 0 20px 60px rgba(255, 152, 0, 0.4);
            }
            50% { 
                box-shadow: 0 25px 80px rgba(255, 152, 0, 0.5);
            }
        }

        /* OVERLAY MEJORADO PARA ZONA CENTRAL */
        .toast-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.15);
            backdrop-filter: blur(2px);
            z-index: 9998;
            pointer-events: none;
            opacity: 0;
            transition: all 0.4s ease;
        }

        .toast-overlay.show {
            opacity: 1;
        }

        .hidden { display: none; }
        .loading { text-align: center; padding: 40px; color: #666; }

        /* ALERTAS PARA FINES DE SEMANA */
        .alert {
            padding: 20px;
            border-radius: 12px;
            margin-bottom: 20px;
            border: 2px solid;
        }

        .alert-warning {
            background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
            border-color: #ff9800;
            color: #e65100;
        }

        .alert-error {
            background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
            border-color: #f44336;
            color: #c62828;
        }

        .alert-info {
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
            border-color: #2196f3;
            color: #1976d2;
        }

        /* ADMIN PANEL MEJORADO */
        .admin-panel {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
            margin-bottom: 30px;
        }

        /* PESTAÑAS DE ADMIN */
        .admin-tabs {
            display: flex;
            margin-bottom: 30px;
            border-bottom: 2px solid #e1e8ed;
        }

        .admin-tab-btn {
            background: none;
            border: none;
            padding: 15px 25px;
            font-size: 16px;
            font-weight: 600;
            color: #666;
            cursor: pointer;
            border-bottom: 3px solid transparent;
            transition: all 0.3s ease;
            font-family: 'Inter', sans-serif;
        }

        .admin-tab-btn.active {
            color: #667eea;
            border-bottom-color: #667eea;
            background: rgba(102, 126, 234, 0.05);
        }

        .admin-tab-btn:hover {
            color: #667eea;
            background: rgba(102, 126, 234, 0.05);
        }

        .admin-tab-content {
            display: none;
        }

        .admin-tab-content.active {
            display: block;
        }

        /* GESTIÓN DE USUARIOS */
        .users-management {
            max-width: 1000px;
        }

        .user-form-section {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 25px;
            border-radius: 12px;
            margin-bottom: 30px;
            border: 1px solid #dee2e6;
        }

        .user-form-section h4 {
            color: #2c3e50;
            margin-bottom: 20px;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .users-list-section h4 {
            color: #2c3e50;
            margin-bottom: 20px;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .users-list {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 20px;
            max-height: 500px;
            overflow-y: auto;
        }

        .user-card {
            background: white;
            border-radius: 10px;
            padding: 20px;
            margin-bottom: 15px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            border-left: 4px solid #667eea;
            transition: all 0.3s ease;
        }

        .user-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .user-card.admin {
            border-left-color: #ff6b6b;
        }

        .user-card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .user-info {
            flex: 1;
        }

        .user-name {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 5px;
        }

        .user-details {
            color: #666;
            font-size: 0.9rem;
        }

        .user-actions {
            display: flex;
            gap: 8px;
        }

        .user-actions .btn {
            padding: 8px 12px;
            font-size: 12px;
        }

        .role-badge {
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-left: 10px;
        }

        .role-badge.admin {
            background: #ff6b6b;
            color: white;
        }

        .role-badge.user {
            background: #4caf50;
            color: white;
        }

        /* ESTILOS PARA LA BÚSQUEDA DE USUARIOS */
        .search-users-section {
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
            padding: 20px;
            border-radius: 12px;
            margin-bottom: 25px;
            border: 2px solid #2196f3;
        }

        .search-users-section h4 {
            color: #1976d2;
            margin-bottom: 15px;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .search-controls {
            display: grid;
            grid-template-columns: 1fr auto auto;
            gap: 15px;
            align-items: end;
        }

        .search-input-group {
            position: relative;
        }

        .search-input-group input {
            padding-right: 45px;
        }

        .search-input-group .search-icon {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #2196f3;
            pointer-events: none;
        }

        .search-stats {
            background: rgba(255, 255, 255, 0.8);
            padding: 15px;
            border-radius: 10px;
            margin-top: 15px;
            border-left: 4px solid #2196f3;
        }

        .search-results-info {
            font-size: 14px;
            color: #666;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .user-card.highlighted {
            border-left-color: #4caf50 !important;
            background: linear-gradient(135deg, #f1f8e9 0%, #e8f5e8 100%);
            transform: scale(1.02);
            box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
        }

        .highlight {
            background: linear-gradient(135deg, #ffeb3b 0%, #fff176 100%);
            padding: 2px 4px;
            border-radius: 3px;
            font-weight: bold;
        }

        .no-results {
            text-align: center;
            padding: 40px;
            color: #666;
            background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
            border-radius: 12px;
            border: 2px dashed #ff9800;
        }

        .no-results i {
            font-size: 3rem;
            color: #ff9800;
            margin-bottom: 15px;
            display: block;
        }

        .clear-search-btn {
            background: linear-gradient(135deg, #f44336 0%, #d32f2f 100%);
            color: white;
            border: none;
            padding: 12px 16px;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
        }

        .clear-search-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(244, 67, 54, 0.3);
        }

        .filter-options {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }

        .filter-btn {
            background: rgba(255, 255, 255, 0.8);
            border: 2px solid #e0e0e0;
            padding: 8px 16px;
            border-radius: 20px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 13px;
            font-weight: 600;
        }

        .filter-btn.active {
            background: #2196f3;
            color: white;
            border-color: #2196f3;
        }

        .filter-btn:hover {
            border-color: #2196f3;
            transform: translateY(-1px);
        }

        /* MODAL PARA EDITAR USUARIO */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 10000;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .modal-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        .modal {
            background: white;
            border-radius: 15px;
            padding: 30px;
            max-width: 500px;
            width: 90%;
            max-height: 80vh;
            overflow-y: auto;
            transform: scale(0.9);
            transition: transform 0.3s ease;
        }

        .modal-overlay.show .modal {
            transform: scale(1);
        }

        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 2px solid #e1e8ed;
        }

        .modal-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #2c3e50;
        }

        .modal-close {
            background: none;
            border: none;
            font-size: 24px;
            color: #666;
            cursor: pointer;
            padding: 5px;
            transition: color 0.2s ease;
        }

        .modal-close:hover {
            color: #333;
        }

        /* ESTILOS PARA RESTRICCIÓN DE FECHAS PASADAS */
        .date-restriction-note {
            background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
            border: 2px solid #ff9800;
            border-radius: 8px;
            padding: 12px;
            margin-top: 8px;
            font-size: 12px;
            color: #e65100;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .admin-date-note {
            background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
            border: 2px solid #ff6b6b;
            border-radius: 8px;
            padding: 12px;
            margin-top: 8px;
            font-size: 12px;
            color: #c62828;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* RESPONSIVE */
        @media (max-width: 768px) {
            .container { padding: 20px; }
            .header h1 { font-size: 2rem; }
            .login-section { padding: 30px; }
            .form-row { grid-template-columns: 1fr; }
            .schedule-grid { grid-template-columns: 1fr; }
            .resource-btn { margin: 5px; }
            
            .toast-container {
                width: 95%;
                max-width: 450px;
            }
            
            .toast {
                min-width: 300px;
                padding: 20px 24px;
                gap: 16px;
            }
            
            .toast-icon {
                font-size: 24px;
            }
            
            .toast-content {
                font-size: 16px;
                font-weight: 600;
            }
            
            .toast-close {
                width: 36px;
                height: 36px;
                font-size: 14px;
            }
            
            .search-controls {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            
            .filter-options {
                justify-content: center;
            }
        }
    </style>