/* MUI Color Palette Integration */
        :root {
            /* Primary - Purple */
            --primary-lighter: #d1c6ed;
            --primary-light: #937ad8;
            --primary-main: #6142c6;
            --primary-dark: #4835b6;
            --primary-darker: #1f23a1;
            
            /* Secondary - Orange */
            --secondary-lighter: #ffd4bc;
            --secondary-light: #ffb991;
            --secondary-main: #ff9f63;
            --secondary-dark: #fe8b3c;
            --secondary-darker: #fe7a0b;
            
            /* Info - Blue */
            --info-lighter: #CAFDF5;
            --info-light: #61F3F3;
            --info-main: #00B8D9;
            --info-dark: #006C9C;
            --info-darker: #003768;
            
            /* Success - Green */
            --success-lighter: #D3FCD2;
            --success-light: #77ED8B;
            --success-main: #22C55E;
            --success-dark: #118D57;
            --success-darker: #065E49;
            
            /* Warning - Yellow */
            --warning-lighter: #FFF5CC;
            --warning-light: #FFD666;
            --warning-main: #FFAB00;
            --warning-dark: #B76E00;
            --warning-darker: #7A4100;
            
            /* Error - Red */
            --error-lighter: #FFE9D5;
            --error-light: #FFAC82;
            --error-main: #FF5630;
            --error-dark: #B71D18;
            --error-darker: #7A0916;
            
            /* Grey Scale */
            --grey-0: #FFFFFF;
            --grey-100: #F9FAFB;
            --grey-200: #F4F6F8;
            --grey-300: #DFE3E8;
            --grey-400: #C4CDD5;
            --grey-500: #919EAB;
            --grey-600: #637381;
            --grey-700: #454F5B;
            --grey-800: #212B36;
            --grey-900: #161C24;
            
            /* Text Colors */
            --text-primary: var(--grey-800);
            --text-secondary: var(--grey-600);
            --text-disabled: var(--grey-500);
            
            /* Background */
            --bg-paper: #FFFFFF;
            --bg-default: #FFFFFF;
            --bg-neutral: var(--grey-200);
            
            /* Action States */
            --action-hover: rgba(145, 158, 171, 0.08);
            --action-selected: rgba(145, 158, 171, 0.16);
            --action-focus: rgba(145, 158, 171, 0.24);
            --action-disabled: rgba(145, 158, 171, 0.8);
        }

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

        body {
            font-family: 'Roboto', sans-serif;
            background-color: var(--bg-default);
            color: var(--text-primary);
            line-height: 1.5;
        }

        .loading {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--bg-paper);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }

        .spinner {
            width: 40px;
            height: 40px;
            border: 3px solid var(--grey-300);
            border-top: 3px solid var(--primary-main);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .hidden { display: none !important; }

        /* App Container */
        .app-container {
            max-width: 393px;
            margin: 0 auto;
            background: var(--bg-default);
            min-height: 100vh;
            position: relative;
        }

        /* Material Top App Bar */
        .top-app-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 16px;
            background: var(--bg-paper);
            border-bottom: 1px solid var(--grey-300);
            height: 64px;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 3px rgba(145, 158, 171, 0.12);
        }

        .app-bar-leading {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .app-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 400;
            color: var(--text-primary);
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-main);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 8px 16px 0 rgba(97, 66, 198, 0.24);
        }

        .app-bar-trailing {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Material Chips */
        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            background: var(--grey-100);
            color: var(--text-secondary);
            border-radius: 16px;
            font-size: 12px;
            font-weight: 500;
            border: 1px solid var(--grey-300);
        }

        .chip--elevated {
            background: var(--bg-paper);
            box-shadow: 0 2px 4px rgba(145, 158, 171, 0.12);
            border: none;
        }

        .pulse-dot {
            width: 6px;
            height: 6px;
            background: var(--info-main);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.2); }
        }

        /* Hero Section */
        .hero-section {
            background: linear-gradient(135deg, var(--primary-main), var(--secondary-main));
            color: white;
            border-radius: 0 0 16px 16px;
            padding: 24px;
            margin: 0 16px 16px 16px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 8px 16px 0 rgba(97, 66, 198, 0.24);
        }

        .hero-logo {
            width: 120px;
            height: 120px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            padding: 16px;
            object-fit: contain;
            box-shadow: 0 12px 24px -4px rgba(33, 43, 54, 0.12);
        }

        .hero-content {
            text-align: center;
        }

        .hero-title {
            font-size: 24px;
            font-weight: 400;
            margin-bottom: 8px;
            line-height: 1.2;
        }

        .hero-subtitle {
            font-size: 14px;
            opacity: 0.87;
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .hero-location {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 12px;
            opacity: 0.87;
            margin-bottom: 20px;
        }

        .hero-actions {
            display: flex;
            gap: 8px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Material Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 36px;
            padding: 0 16px;
            border: none;
            border-radius: 18px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            text-decoration: none;
            transition: all 200ms ease;
            position: relative;
            overflow: hidden;
        }

        .btn--filled {
            background: var(--primary-main);
            color: white;
            box-shadow: 0 2px 4px rgba(97, 66, 198, 0.16);
        }

        .btn--filled:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 8px rgba(97, 66, 198, 0.24);
            transform: translateY(-1px);
        }

        .btn--outlined {
            background: transparent;
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .btn--outlined:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: white;
        }

        .btn--tonal {
            background: var(--secondary-lighter);
            color: var(--secondary-dark);
        }

        .btn--tonal:hover {
            background: var(--secondary-light);
            box-shadow: 0 2px 8px rgba(255, 159, 99, 0.24);
        }

        /* Content Sections */
        .content-section {
            padding: 0 16px 16px 16px;
        }

        .section-title {
            font-size: 22px;
            font-weight: 400;
            color: var(--text-primary);
            margin: 24px 0 16px 0;
        }

        .trust-indicators {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        /* Material Cards */
        .card {
            background: var(--bg-paper);
            border-radius: 12px;
            box-shadow: 0 0 2px 0 rgba(145, 158, 171, 0.2), 0 12px 24px -4px rgba(145, 158, 171, 0.12);
            overflow: hidden;
            margin-bottom: 16px;
        }

        .card-content {
            padding: 16px;
        }

        .campaign-title {
            font-size: 16px;
            font-weight: 500;
            margin-bottom: 4px;
        }

        .campaign-subtitle {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .campaign-details {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 16px;
        }

        .detail-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .detail-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        .detail-value {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-primary);
        }

        /* Process Steps */
        .process-steps {
            margin-bottom: 24px;
        }

        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px;
            border-bottom: 1px solid var(--grey-300);
        }

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

        .step-number {
            min-width: 32px;
            height: 32px;
            background: var(--primary-lighter);
            color: var(--primary-darker);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 500;
            font-size: 14px;
            box-shadow: 0 4px 8px 0 rgba(97, 66, 198, 0.16);
        }

        .step-content h3 {
            font-size: 16px;
            font-weight: 500;
            margin-bottom: 4px;
        }

        .step-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.4;
        }

        /* FAQ Section */
        .faq-section {
            margin-bottom: 24px;
        }

        .faq-item {
            margin-bottom: 8px;
            background: var(--grey-100);
            border-radius: 12px;
            overflow: hidden;
        }

        .faq-summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            border: none;
            background: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
        }

        .faq-summary:hover {
            background: var(--action-hover);
        }

        .faq-content {
            padding: 0 16px 16px 16px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.4;
            display: none;
        }

        .faq-item.open .faq-content {
            display: block;
        }

        .faq-icon {
            transition: transform 0.2s ease;
            color: var(--text-secondary);
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }

        /* Floating Action Button */
        .fab {
            position: fixed;
            bottom: 16px;
            right: 16px;
            width: 56px;
            height: 56px;
            background: var(--primary-main);
            color: white;
            border: none;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 100;
            box-shadow: 0 8px 16px 0 rgba(97, 66, 198, 0.24);
            transition: all 200ms ease;
        }

        .fab:hover {
            background: var(--primary-dark);
            box-shadow: 0 12px 24px 0 rgba(97, 66, 198, 0.32);
            transform: translateY(-2px);
        }

        /* Snackbar */
        .snackbar {
            position: fixed;
            bottom: 16px;
            left: 16px;
            right: 16px;
            background: var(--grey-700);
            color: white;
            border-radius: 4px;
            padding: 14px 16px;
            display: flex;
            align-items: center;
            gap: 12px;
            z-index: 1000;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.24);
            transform: translateY(100%);
            transition: transform 0.3s ease;
        }

        .snackbar.show {
            transform: translateY(0);
        }

        /* Footer */
        .footer-info {
            text-align: center;
            padding: 24px 16px 80px 16px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* Error State */
        .error-state {
            text-align: center;
            padding: 48px 24px;
        }

        .error-icon {
            font-size: 48px;
            color: var(--error-main);
            margin-bottom: 16px;
        }

        .error-title {
            font-size: 24px;
            font-weight: 400;
            margin-bottom: 8px;
        }

        .error-message {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* Homepage */
        .homepage {
            text-align: center;
            padding: 48px 24px;
        }

        .homepage-title {
            font-size: 36px;
            font-weight: 400;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .homepage-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.4;
        }

        .app-download-section {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 280px;
            margin: 0 auto;
        }

        /* Responsive */
        @media (min-width: 600px) {
            .app-container {
                box-shadow: 0 0 24px rgba(145, 158, 171, 0.12);
            }
        }