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

        body {
            background: #0a0a0a;
            color: #e0e0e0;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            position: relative;
            overflow: hidden;
        }

        /* Background Effect */
        body::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.03) 0%, transparent 70%);
            animation: rotate 30s linear infinite;
        }

        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .register-wrapper {
            position: relative;
            z-index: 1;
            width: 100%;
            max-width: 500px;
        }

        /* Header */
        .register-header {
            text-align: center;
            margin-bottom: 30px;
        }

        .register-logo {
            font-size: 2.5em;
            margin-bottom: 15px;
            animation: float 3s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }

        .register-title {
            color: #fff;
            font-size: 1.8em;
            font-weight: 300;
            letter-spacing: -0.5px;
            margin-bottom: 8px;
        }

        .register-subtitle {
            color: #888;
            font-size: 0.9em;
            font-weight: 300;
        }

        /* Register Container */
        .register-container {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 16px;
            padding: 35px 30px;
            backdrop-filter: blur(10px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            animation: slideUp 0.5s ease;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Form */
        .register-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-label {
            font-size: 0.85em;
            color: #888;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .form-icon {
            font-size: 1.2em;
        }

        .form-input,
        .form-select {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 14px 16px;
            color: #fff;
            font-size: 1em;
            transition: all 0.3s;
            outline: none;
        }

        .form-input::placeholder {
            color: #555;
        }

        .form-input:focus,
        .form-select:focus {
            background: rgba(255, 255, 255, 0.08);
            border-color: #FFD700;
            box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
        }

        .form-input:hover,
        .form-select:hover {
            border-color: rgba(255, 255, 255, 0.2);
        }

        .form-select {
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23FFD700' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 15px center;
            padding-right: 40px;
        }

        .form-select option {
            background: #1a1a1a;
            color: #fff;
        }

        .form-help {
            font-size: 0.75em;
            color: #666;
            line-height: 1.4;
        }

        .help-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: #2196F3;
            text-decoration: none;
            border-bottom: 1px solid transparent;
            transition: all 0.3s;
        }

        .help-link:hover {
            border-bottom-color: #2196F3;
        }

        /* Info Box */
        .info-box {
            background: rgba(33, 150, 243, 0.05);
            border: 1px solid rgba(33, 150, 243, 0.2);
            border-radius: 8px;
            padding: 12px 15px;
            display: flex;
            gap: 10px;
            align-items: flex-start;
        }

        .info-icon {
            color: #2196F3;
            font-size: 1.2em;
            flex-shrink: 0;
        }

        .info-text {
            color: #aaa;
            font-size: 0.8em;
            line-height: 1.5;
        }

        .info-link {
            color: #2196F3;
            text-decoration: none;
            border-bottom: 1px solid transparent;
            transition: all 0.3s;
        }

        .info-link:hover {
            border-bottom-color: #2196F3;
        }

        /* Button */
        .btn-primary {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 165, 0, 0.2));
            border: 1px solid rgba(255, 215, 0, 0.4);
            border-radius: 8px;
            padding: 14px 24px;
            color: #FFD700;
            font-size: 1em;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s;
            text-transform: uppercase;
            letter-spacing: 1px;
            width: 100%;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.3), rgba(255, 165, 0, 0.3));
            border-color: rgba(255, 215, 0, 0.6);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.2);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-primary:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none;
        }

        /* Divider */
        .divider {
            display: flex;
            align-items: center;
            gap: 15px;
            margin: 25px 0;
        }

        .divider-line {
            flex: 1;
            height: 1px;
            background: rgba(255, 255, 255, 0.06);
        }

        .divider-text {
            color: #666;
            font-size: 0.75em;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Login Link */
        .login-section {
            text-align: center;
            padding: 20px;
        }

        .login-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #888;
            text-decoration: none;
            font-size: 0.9em;
            border-bottom: 1px solid transparent;
            transition: all 0.3s;
        }

        .login-link:hover {
            color: #FFD700;
            border-bottom-color: #FFD700;
        }

        /* Validation Messages */
        .validation-message {
            font-size: 0.75em;
            margin-top: 4px;
            display: none;
        }

        .validation-message.error {
            color: #f44336;
            display: block;
        }

        .validation-message.success {
            color: #4CAF50;
            display: block;
        }

        .modal {
            display: none;
            position: fixed;
            z-index: 1;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.4);
        }
        .modal-content {
            background-color: #000000;
            margin: 15% auto;
            padding: 20px;
            border: 1px solid #888;
            width: 80%;
            max-width: 500px;
            border-radius: 10px;
        }
        .close {
            color: #aaa;
            float: right;
            font-size: 28px;
            font-weight: bold;
        }
        .close:hover,
        .close:focus {
            color: black;
            text-decoration: none;
            cursor: pointer;
        }

        /* Responsive */
        @media (max-width: 768px) {
            body {
                padding: 15px;
            }

            .register-container {
                padding: 25px 20px;
            }

            .register-title {
                font-size: 1.5em;
            }
        }

        @media (max-width: 480px) {
            .register-container {
                padding: 20px 15px;
            }

            .register-title {
                font-size: 1.3em;
            }

            .form-input,
            .form-select,
            .btn-primary {
                padding: 12px 16px;
            }
        }

        /* Animations */
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .form-group {
            opacity: 0;
            animation: fadeIn 0.3s ease forwards;
        }

        .form-group:nth-child(1) { animation-delay: 0.1s; }
        .form-group:nth-child(2) { animation-delay: 0.15s; }
        .form-group:nth-child(3) { animation-delay: 0.2s; }
        .form-group:nth-child(4) { animation-delay: 0.25s; }
        .form-group:nth-child(5) { animation-delay: 0.3s; }