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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #1a1a1a;
            color: #ffffff;
            min-height: 100vh;
            position: relative;
        }

        /* Browser UI Simulation */
        .browser-ui {
            background: #2a2a2a;
            padding: 8px 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #ffffff;
            border-bottom: 1px solid #333;
        }

        .browser-left {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .browser-center {
            flex: 1;
            margin: 0 16px;
        }

        .address-bar {
            background: #333;
            padding: 4px 12px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 11px;
        }

        .browser-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .signal-bars {
            display: flex;
            gap: 1px;
        }

        .signal-bar {
            width: 2px;
            background: #4CAF50;
            border-radius: 1px;
        }

        .signal-bar:nth-child(1) { height: 4px; }
        .signal-bar:nth-child(2) { height: 6px; }
        .signal-bar:nth-child(3) { height: 8px; }
        .signal-bar:nth-child(4) { height: 10px; }

        /* App Header */
        .app-header {
            background: #1a1a1a;
            padding: 16px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid #333;
        }

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

        .logo-text {
            font-size: 18px;
            font-weight: bold;
        }

        .logo-hilton {
            color: #4CAF50;
        }

        .logo-bet {
            color: #ffffff;
            background: #4CAF50;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .login-link {
            color: #ffffff;
            text-decoration: underline;
            font-size: 14px;
            cursor: pointer;
        }

        .close-btn {
            background: none;
            border: none;
            color: #ffffff;
            font-size: 18px;
            cursor: pointer;
            padding: 4px;
        }

        /* Modal Styles */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.8);
            backdrop-filter: blur(5px);
        }

        .modal-content {
            background: #1a1a1a;
            margin: 5% auto;
            padding: 0;
            border-radius: 12px;
            width: 90%;
            max-width: 400px;
            max-height: 90vh;
            overflow-y: auto;
            position: relative;
            border: 1px solid #333;
        }

        .modal-header {
            background: #2a2a2a;
            padding: 16px 20px;
            border-bottom: 1px solid #333;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .modal-title {
            font-size: 18px;
            font-weight: bold;
            color: #ffffff;
        }

        .modal-close {
            background: none;
            border: none;
            color: #ffffff;
            font-size: 20px;
            cursor: pointer;
            padding: 4px;
        }

        .modal-body {
            padding: 20px;
        }

        /* Form Container */
        .form-container {
            padding: 20px;
            max-width: 400px;
            margin: 0 auto;
        }

        .form-title {
            text-align: center;
            margin-bottom: 30px;
            font-size: 20px;
            font-weight: bold;
            color: #ffffff;
        }

        .form-subtitle {
            text-align: center;
            margin-bottom: 30px;
            font-size: 14px;
            color: #cccccc;
            line-height: 1.4;
        }

        /* Form Fields */
        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            display: block;
            margin-bottom: 8px;
            color: #cccccc;
            font-size: 14px;
            font-weight: 500;
        }

        .form-input {
            width: 100%;
            padding: 16px 20px;
            background: #2a2a2a;
            border: 1px solid #444;
            border-radius: 8px;
            color: #ffffff;
            font-size: 16px;
            transition: all 0.3s ease;
        }

        .form-input:focus {
            outline: none;
            border-color: #83731b;
            background: #333;
        }

        .form-input::placeholder {
            color: #888;
        }

        .form-select {
            width: 100%;
            padding: 16px 20px;
            background: #2a2a2a;
            border: 1px solid #444;
            border-radius: 8px;
            color: #ffffff;
            font-size: 16px;
            cursor: pointer;
            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='white' 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 16px center;
            background-size: 16px;
        }

        .form-select:focus {
            outline: none;
            border-color: #83731b;
            background-color: #333;
        }

        .form-select option {
            background: #2a2a2a;
            color: #ffffff;
        }

        /* Date Input with Calendar Icon */
        .date-input-wrapper {
            position: relative;
        }

        .calendar-icon {
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: #888;
            pointer-events: none;
        }

        /* Country Select with Flag */
        .country-select-wrapper {
            position: relative;
        }

        .country-flag {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            width: 20px;
            height: 15px;
            background: #fff;
            border-radius: 2px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 10px;
            color: #333;
        }

        .country-select-with-flag {
            padding-left: 48px;
        }

        /* Register Button */
        .register-btn, .login-btn {
            width: 100%;
            padding: 16px 20px;
            background: #00c9a7;
            color: #ffffff;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: bold;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 20px;
        }

        .register-btn:hover, .login-btn:hover {
            background: #83731b;
            transform: translateY(-1px);
        }

        .register-btn:active, .login-btn:active {
            transform: translateY(0);
        }

        /* Footer */
        .footer-divider {
            height: 1px;
            background: #333;
            margin: 30px 0 20px 0;
        }

        .support-link {
            text-align: center;
            margin-bottom: 20px;
        }

        .support-link a {
            color: #ffffff;
            text-decoration: underline;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        /* Floating Action Button */
        .fab {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 56px;
            height: 56px;
            background: #83731b;
            border: none;
            border-radius: 50%;
            color: #ffffff;
            font-size: 20px;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(76, 175, 80, 0.4);
            transition: all 0.3s ease;
        }

        .fab:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 16px rgba(76, 175, 80, 0.6);
        }

        /* Android Navigation */
        .android-nav {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: #1a1a1a;
            padding: 8px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid #333;
        }

        .nav-btn {
            background: none;
            border: none;
            color: #888;
            font-size: 16px;
            cursor: pointer;
            padding: 8px;
        }

        .nav-btn.active {
            color: #83731b;
        }

        /* Responsive Design */
        @media (max-width: 480px) {
            .form-container {
                padding: 16px;
            }
            
            .form-input,
            .form-select {
                padding: 14px 16px;
                font-size: 16px; /* Prevents zoom on iOS */
            }
            
            .register-btn, .login-btn {
                padding: 14px 16px;
            }
        }

        /* Loading Animation */
        .loading {
            display: inline-block;
            width: 16px;
            height: 16px;
            border: 2px solid rgba(255,255,255,0.3);
            border-radius: 50%;
            border-top-color: #ffffff;
            animation: spin 1s ease-in-out infinite;
        }

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

        /* Success/Error Messages */
        .message {
            padding: 12px 16px;
            border-radius: 8px;
            margin-bottom: 20px;
            font-size: 14px;
        }

        .message.success {
            background: rgba(76, 175, 80, 0.2);
            color: #83731b;
            border: 1px solid rgba(76, 175, 80, 0.3);
        }

        .message.error {
            background: rgba(244, 67, 54, 0.2);
            color: #83731b;
            border: 1px solid rgba(244, 67, 54, 0.3);
        }

        /* Alert Styles */
        .hilton-alert {
            padding: 12px 16px;
            border-radius: 8px;
            margin-bottom: 20px;
            font-size: 14px;
        }

        .hilton-alert-success {
            background: rgba(76, 175, 80, 0.2);
            color: #83731b;
            border: 1px solid rgba(76, 175, 80, 0.3);
        }

        .hilton-alert-danger {
            background: rgba(244, 67, 54, 0.2);
            color: #83731b;
            border: 1px solid rgba(244, 67, 54, 0.3);
        }

        /* Error text */
        .error-text {
            color: #83731b;
            font-size: 12px;
            margin-top: 4px;
        }

        /* Toggle Forms */
        .form-toggle {
            text-align: center;
            margin-top: 20px;
        }

        .form-toggle a {
            color: #83731b;
            text-decoration: underline;
            cursor: pointer;
        }