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

        :root {
            --primary-pink: #ff006e;
            --secondary-pink: #ff7eb3;
            --accent-pink: #ffb3d9;
            --bg-primary: #000000;
            --bg-secondary: #111111;
            --bg-card: #1a1a1a;
            --text-primary: #ffffff;
            --text-secondary: #cccccc;
            --text-muted: #888888;
            --border: #333333;
            --shadow: rgba(255, 0, 110, 0.3);
            --success: #00ff88;
            --warning: #ffaa00;
            --error: #ff4444;
        }

        [data-theme="light"] {
            --bg-primary: #ffffff;
            --bg-secondary: #f8f9fa;
            --bg-card: #ffffff;
            --text-primary: #333333;
            --text-secondary: #666666;
            --text-muted: #999999;
            --border: #e0e0e0;
            --shadow: rgba(0, 0, 0, 0.1);
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            min-height: 100vh;
            transition: all 0.3s ease;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .phone-container {
            width: 375px;
            height: 812px;
            background: var(--bg-secondary);
            border-radius: 40px;
            padding: 10px;
            box-shadow: 0 20px 60px var(--shadow);
            position: relative;
            overflow: hidden;
        }

        .phone-screen {
            width: 100%;
            height: 100%;
            background: var(--bg-primary);
            border-radius: 30px;
            overflow: hidden;
            position: relative;
        }

        /* Page System */
        .page {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
            transform: translateX(100%);
            transition: transform 0.3s ease;
        }

        .page.active {
            transform: translateX(0);
        }

        .page-header {
            display: flex;
            align-items: center;
            padding: 20px;
            border-bottom: 1px solid var(--border);
        }

        .back-btn {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 24px;
            cursor: pointer;
            margin-right: 15px;
            padding: 5px;
            border-radius: 50%;
            transition: all 0.3s ease;
        }

        .back-btn:hover {
            background: var(--bg-card);
        }

        .page-title {
            font-size: 20px;
            font-weight: 600;
        }

        .page-content {
            flex: 1;
            padding: 20px;
            overflow-y: auto;
        }

        /* Status Bar */
        .status-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .status-left {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .status-right {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* Header */
        .header {
            padding: 10px 20px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .greeting {
            flex: 1;
        }

        .greeting h1 {
            font-size: 24px;
            margin-bottom: 5px;
            background: linear-gradient(45deg, var(--primary-pink), var(--secondary-pink));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .greeting p {
            color: var(--text-muted);
            font-size: 14px;
        }

        .profile-pic {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(45deg, var(--primary-pink), var(--secondary-pink));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .profile-pic:hover {
            transform: scale(1.1);
        }

        .theme-toggle {
            position: absolute;
            top: 20px;
            right: 20px;
            background: var(--bg-card);
            border: 2px solid var(--border);
            border-radius: 20px;
            padding: 5px 10px;
            cursor: pointer;
            font-size: 12px;
            transition: all 0.3s ease;
            z-index: 1000;
        }

        .theme-toggle:hover {
            border-color: var(--primary-pink);
        }

        /* Balance Card */
        .balance-card {
            margin: 0 10px 20px;
            background: linear-gradient(135deg, var(--primary-pink), var(--secondary-pink));
            border-radius: 20px;
            padding: 10px;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .balance-card::before {
            content: top;
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .balance-card h2 {
            font-size: 12px;
            margin-top: none;
            opacity: 0.7;
            position:top;
        }

        .balance-amount {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 5px;
            position: relative;
            z-index: 1;
        }

        .card-actions {
            display: flex;
            gap: 15px;
            position: relative;
            z-index: 1;
        }

        .card-action {
            background: rgba(255, 255, 255, 0.2);
            border: none;
            border-radius: 15px;
            padding: 10px 20px;
            color: white;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }

        .card-action:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }

        /* Quick Actions */
        .quick-actions {
            margin: 0 20px 30px;
        }

        .section-title {
            font-size: 20px;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .actions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 15px;
        }

        .action-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 15px;
            padding: 20px 10px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .action-item:hover {
            background: var(--primary-pink);
            color: white;
            transform: translateY(-5px);
        }

        .action-item .icon {
            font-size: 24px;
            margin-bottom: 10px;
        }

        .action-item .label {
            font-size: 12px;
            color: var(--text-muted);
        }

        .action-item:hover .label {
            color: white;
        }

        /* Transactions */
        .transactions {
            margin: 0 20px;
            flex: 1;
        }

        .transaction-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .view-all {
            color: var(--primary-pink);
            font-size: 14px;
            cursor: pointer;
            text-decoration: none;
        }

        .transaction-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
            max-height: 300px;
            overflow-y: auto;
        }

        .transaction-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 15px;
            padding: 15px;
            display: flex;
            align-items: center;
            gap: 15px;
            transition: all 0.3s ease;
        }

        .transaction-item:hover {
            background: var(--bg-secondary);
            transform: translateX(5px);
        }

        .transaction-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: white;
        }

        .transaction-icon.income {
            background: var(--success);
        }

        .transaction-icon.expense {
            background: var(--error);
        }

        .transaction-icon.transfer {
            background: var(--warning);
        }

        .transaction-details {
            flex: 1;
        }

        .transaction-title {
            font-size: 14px;
            color: var(--text-primary);
            margin-bottom: 5px;
        }

        .transaction-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        .transaction-amount {
            font-size: 16px;
            font-weight: 600;
        }

        .transaction-amount.income {
            color: var(--success);
        }

        .transaction-amount.expense {
            color: var(--error);
        }

        .transaction-amount.transfer {
            color: var(--warning);
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .form-input {
            width: 100%;
            padding: 15px;
            border: 2px solid var(--border);
            border-radius: 12px;
            background: var(--bg-card);
            color: var(--text-primary);
            font-size: 16px;
            transition: all 0.3s ease;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary-pink);
            box-shadow: 0 0 0 3px rgba(255, 0, 110, 0.1);
        }

        .form-select {
            width: 100%;
            padding: 15px;
            border: 2px solid var(--border);
            border-radius: 12px;
            background: var(--bg-card);
            color: var(--text-primary);
            font-size: 16px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .form-select:focus {
            outline: none;
            border-color: var(--primary-pink);
        }

        .btn {
            padding: 15px 30px;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 100%;
        }

        .btn-primary {
            background: linear-gradient(45deg, var(--primary-pink), var(--secondary-pink));
            color: white;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 20px var(--shadow);
        }

        .btn-secondary {
            background: var(--bg-card);
            color: var(--text-primary);
            border: 2px solid var(--border);
        }

        .btn-secondary:hover {
            border-color: var(--primary-pink);
            color: var(--primary-pink);
        }

        /* Cards Page */
        .card-grid {
            display: grid;
            gap: 20px;
            margin-bottom: 30px;
        }

        .bank-card {
            background: linear-gradient(135deg, var(--primary-pink), var(--secondary-pink));
            border-radius: 20px;
            padding: 25px;
            color: white;
            position: relative;
            overflow: hidden;
            height: 200px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .bank-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px var(--shadow);
        }

        .bank-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .card-type {
            font-size: 14px;
            opacity: 0.8;
            margin-bottom: 20px;
        }

        .card-number {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 2px;
        }

        .card-details {
            display: flex;
            justify-content: space-between;
            align-items: end;
            margin-top: auto;
        }

        .card-holder {
            font-size: 14px;
            opacity: 0.8;
        }

        .card-expiry {
            font-size: 14px;
            opacity: 0.8;
        }

        .card-logo {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 24px;
        }

        /* Transfer Page */
        .recent-contacts {
            margin-bottom: 30px;
        }

        .contacts-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 15px;
            margin-bottom: 20px;
        }

        .contact-item {
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .contact-item:hover {
            transform: translateY(-5px);
        }

        .contact-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(45deg, var(--primary-pink), var(--secondary-pink));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
            margin: 0 auto 10px;
        }

        .contact-name {
            font-size: 12px;
            color: var(--text-muted);
        }

        .amount-buttons {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 20px;
        }

        .amount-btn {
            padding: 15px;
            border: 2px solid var(--border);
            border-radius: 12px;
            background: var(--bg-card);
            color: var(--text-primary);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .amount-btn:hover,
        .amount-btn.active {
            border-color: var(--primary-pink);
            background: var(--primary-pink);
            color: white;
        }

        /* Bottom Navigation */
        .bottom-nav {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-card);
            border-top: 1px solid var(--border);
            padding: 15px 20px;
            display: flex;
            justify-content: space-around;
            align-items: center;
        }

        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 5px;
            cursor: pointer;
            transition: all 0.3s ease;
            padding: 5px;
        }

        .nav-item.active {
            color: var(--primary-pink);
        }

        .nav-item:hover {
            color: var(--primary-pink);
            transform: translateY(-2px);
        }

        .nav-item .icon {
            font-size: 20px;
        }

        .nav-item .label {
            font-size: 10px;
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }

        .animate-fade-in {
            animation: fadeInUp 0.6s ease-out;
        }

        .pulse {
            animation: pulse 2s infinite;
        }

        /* Scrollbar */
        .transaction-list::-webkit-scrollbar,
        .page-content::-webkit-scrollbar {
            width: 4px;
        }

        .transaction-list::-webkit-scrollbar-track,
        .page-content::-webkit-scrollbar-track {
            background: var(--bg-secondary);
            border-radius: 2px;
        }

        .transaction-list::-webkit-scrollbar-thumb,
        .page-content::-webkit-scrollbar-thumb {
            background: var(--primary-pink);
            border-radius: 2px;
        }

        /* Bills Page */
        .bills-grid {
            display: grid;
            gap: 15px;
            margin-bottom: 30px;
        }

        .bill-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 15px;
            padding: 20px;
            display: flex;
            align-items: center;
            gap: 15px;
            transition: all 0.3s ease;
        }

        .bill-item:hover {
            background: var(--bg-secondary);
            transform: translateX(5px);
        }

        .bill-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: white;
        }

        .bill-icon.utilities {
            background: var(--warning);
        }

        .bill-icon.internet {
            background: var(--success);
        }

        .bill-icon.mobile {
            background: var(--primary-pink);
        }

        .bill-details {
            flex: 1;
        }

        .bill-name {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 5px;
        }

        .bill-due {
            font-size: 12px;
            color: var(--text-muted);
        }

        .bill-amount {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .bill-status {
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }

        .bill-status.paid {
            background: rgba(0, 255, 136, 0.2);
            color: var(--success);
        }

        .bill-status.pending {
            background: rgba(255, 170, 0, 0.2);
            color: var(--warning);
        }

        .bill-status.overdue {
            background: rgba(255, 68, 68, 0.2);
            color: var(--error);
        }

        /* Responsive */
        @media (max-width: 400px) {
            .phone-container {
                width: 100%;
                height: 100vh;
                border-radius: 0;
                padding: 0;
            }

            .phone-screen {
                border-radius: 0;
            }
        }