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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            color: #333;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        .header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            text-align: center;
        }

        .header h1 {
            color: #2c3e50;
            font-size: 2.5em;
            margin-bottom: 10px;
            background: linear-gradient(45deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .header p {
            color: #7f8c8d;
            font-size: 1.1em;
        }

        /* Auth Panel */
        .auth-panel {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            text-align: center;
        }

        .auth-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .role-button {
            background: linear-gradient(45deg, #667eea, #764ba2);
            color: white;
            padding: 15px 30px;
            border: none;
            border-radius: 10px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .role-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
        }

        .role-button.active {
            background: linear-gradient(45deg, #27ae60, #2ecc71);
        }

        .admin-login {
            display: none;
            margin-top: 20px;
        }

        .admin-panel {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            display: none;
        }

        .admin-panel h2 {
            color: #2c3e50;
            margin-bottom: 20px;
            font-size: 1.8em;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-row {
            display: flex;
            gap: 15px;
            margin-bottom: 15px;
            flex-wrap: wrap;
        }

        .form-row>div {
            flex: 1;
            min-width: 200px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            color: #34495e;
            font-weight: 600;
        }

        input,
        textarea,
        select {
            width: 100%;
            padding: 12px;
            border: 2px solid #e1e8ed;
            border-radius: 10px;
            font-size: 16px;
            transition: all 0.3s ease;
        }

        input:focus,
        textarea:focus,
        select:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        button {
            background: linear-gradient(45deg, #667eea, #764ba2);
            color: white;
            padding: 12px 25px;
            border: none;
            border-radius: 10px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s ease;
            margin-right: 10px;
            margin-bottom: 10px;
        }

        button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
        }

        .export-btn {
            background: linear-gradient(45deg, #27ae60, #2ecc71);
        }

        .export-btn:hover {
            box-shadow: 0 10px 25px rgba(39, 174, 96, 0.3);
        }

        .events-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 25px;
            margin-bottom: 30px;
        }

        .event-card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 25px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .event-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
        }

        .event-card.full {
            border-color: #e74c3c;
            opacity: 0.7;
        }

        .event-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .event-title {
            font-size: 1.4em;
            font-weight: 700;
            color: #2c3e50;
        }

        .event-status {
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.9em;
            font-weight: 600;
        }

        .status-available {
            background: #d5f4e6;
            color: #27ae60;
        }

        .status-full {
            background: #fadbd8;
            color: #e74c3c;
        }

        .event-details {
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .event-detail {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
            padding: 5px 0;
        }

        .event-detail strong {
            color: #34495e;
        }

        .participants-list {
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid #ecf0f1;
        }

        .participant-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px 0;
            border-bottom: 1px solid #f8f9fa;
        }

        .participant-item:last-child {
            border-bottom: none;
        }

        .participant-details {
            font-size: 0.9em;
            color: #7f8c8d;
        }

        .remove-btn {
            background: #e74c3c;
            padding: 4px 8px;
            font-size: 12px;
            border-radius: 5px;
        }

        .remove-btn:hover {
            background: #c0392b;
        }

        .registration-form {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            display: none;
        }

        .statistics {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 25px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            display: none;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }

        .stat-card {
            background: linear-gradient(45deg, #667eea, #764ba2);
            color: white;
            padding: 20px;
            border-radius: 10px;
            text-align: center;
        }

        .stat-number {
            font-size: 2.5em;
            font-weight: 700;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.9em;
            opacity: 0.9;
        }

        .error-message {
            background: #fadbd8;
            color: #e74c3c;
            padding: 10px;
            border-radius: 5px;
            margin-top: 10px;
            display: none;
        }

        .success-message {
            background: #d5f4e6;
            color: #27ae60;
            padding: 10px;
            border-radius: 5px;
            margin-top: 10px;
            display: none;
        }

        .user-info {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 10px;
            padding: 15px;
            margin-bottom: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logout-btn {
            background: #e74c3c;
            padding: 8px 15px;
            font-size: 14px;
        }

        .logout-btn:hover {
            background: #c0392b;
        }

        @media (max-width: 768px) {
            .form-row {
                flex-direction: column;
            }

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

            .header h1 {
                font-size: 2em;
            }

            .auth-buttons {
                flex-direction: column;
            }
        }

        /* #registerBtn {
            display: none;
        } */