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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
            min-height: 100vh;
            color: #ffffff;
        }

        /* Sidebar Overlay */
        .sidebar-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .sidebar-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        /* Sidebar Menu */
        .sidebar {
            position: fixed;
            top: 0;
            right: -320px;
            width: 320px;
            height: 100%;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            z-index: 999;
            transition: all 0.3s ease;
            box-shadow: -5px 0 20px rgba(0, 0, 0, 0.3);
        }

        .sidebar.active {
            right: 0;
        }

        .sidebar-header {
            padding: 60px 30px 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .sidebar-title {
            font-size: 24px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .sidebar-subtitle {
            font-size: 14px;
            color: #b8bcc8;
            opacity: 0.7;
        }

        .sidebar-menu {
            padding: 30px 0;
        }

        .sidebar-item {
            display: flex;
            align-items: center;
            padding: 15px 30px;
            color: #b8bcc8;
            text-decoration: none;
            font-size: 16px;
            font-weight: 500;
            transition: all 0.3s ease;
            border-left: 3px solid transparent;
        }

        .sidebar-item:hover {
            background: rgba(255, 255, 255, 0.05);
            color: #ffffff;
            border-left-color: #00d2ff;
        }

        .sidebar-item.active {
            background: rgba(0, 210, 255, 0.1);
            color: #00d2ff;
            border-left-color: #00d2ff;
        }

        .sidebar-icon {
            width: 24px;
            height: 24px;
            margin-right: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .sidebar-close {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border: none;
            border-radius: 10px;
            color: #ffffff;
            font-size: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .sidebar-close:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .header {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            color: white;
            padding: 60px 20px 40px;
            position: relative;
            border-radius: 0 0 30px 30px;
            margin-bottom: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }

        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
        }

        .logout-icon {
            width: 90px;
            height: 30px;
            background: linear-gradient(135deg, #ff416c 0%, #ff4757 100%);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: none;
            color: white;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(255, 65, 108, 0.3);
        }

        .logout-icon:hover {
            background: linear-gradient(135deg, #ff3742 0%, #ff2f43 100%);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 65, 108, 0.4);
        }

        .menu-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 18px;
            color: white;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
        }

        .menu-icon:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 210, 255, 0.4);
        }

        .app-title {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .app-subtitle {
            font-size: 18px;
            opacity: 0.7;
            font-weight: 300;
            margin-bottom: 30px;
            color: #b8bcc8;
        }

        .user-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
            backdrop-filter: blur(20px);
            border-radius: 20px;
            padding: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        }

        .user-avatar {
            width: 160px;
            height: 60px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 15px;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
        }

        .user-name {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 5px;
            color: #ffffff;
        }

        .user-email {
            font-size: 14px;
            opacity: 0.7;
            color: #b8bcc8;
        }

        .main-content {
            padding: 0 20px 40px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .filter-tabs {
            display: flex;
            gap: 12px;
            margin-bottom: 30px;
        }

        .filter-tab {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 25px;
            padding: 12px 24px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
        }

        .filter-tab.inactive {
            background: linear-gradient(135deg, #2c2c54 0%, #40407a 100%);
            color: #b8bcc8;
            box-shadow: 0 2px 10px rgba(44, 44, 84, 0.3);
        }

        .filter-tab:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        }

        .crypto-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
            backdrop-filter: blur(20px);
            border-radius: 16px;
            padding: 20px;
            margin-bottom: 16px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
            display: flex;
            align-items: center;
            justify-content: space-between;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .crypto-card:hover {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.06) 100%);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
            border-color: rgba(0, 210, 255, 0.3);
        }

        .crypto-card:active {
            transform: translateY(0);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        .crypto-left {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .crypto-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 600;
            color: white;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }

        .crypto-details h3 {
            font-size: 16px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 4px;
        }

        .crypto-details p {
            font-size: 14px;
            color: #b8bcc8;
        }

        .crypto-middle {
            flex: 1;
            display: flex;
            justify-content: center;
            align-items: center;
            margin: 0 15px;
        }

        .mini-chart {
            width: 60px;
            height: 30px;
            position: relative;
        }

        .chart-line {
            stroke-width: 2;
            fill: none;
        }

        .chart-up { 
            stroke: #00ff88;
            filter: drop-shadow(0 0 4px rgba(0, 255, 136, 0.5));
        }
        
        .chart-down { 
            stroke: #ff3742;
            filter: drop-shadow(0 0 4px rgba(255, 55, 66, 0.5));
        }

        .crypto-right {
            text-align: right;
        }

        .crypto-price {
            font-size: 16px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 4px;
        }

        .crypto-change {
            font-size: 12px;
            font-weight: 500;
            padding: 4px 8px;
            border-radius: 8px;
        }

        .change-positive {
            color: #00ff88;
            background: linear-gradient(135deg, rgba(0, 255, 136, 0.15) 0%, rgba(0, 255, 136, 0.1) 100%);
            border: 1px solid rgba(0, 255, 136, 0.2);
        }

        .change-negative {
            color: #ff3742;
            background: linear-gradient(135deg, rgba(255, 55, 66, 0.15) 0%, rgba(255, 55, 66, 0.1) 100%);
            border: 1px solid rgba(255, 55, 66, 0.2);
        }

        .crypto-time {
            font-size: 10px;
            color: #666c7a;
            margin-top: 2px;
        }

        @keyframes balanceGlow {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); color: #4ade80; }
            100% { transform: scale(1); }
        }

        @media (max-width: 380px) {
            .header {
                padding: 50px 15px 30px;
            }
            
            .app-title {
                font-size: 40px;
            }
            
            .main-content {
                padding: 0 15px 40px;
            }
            
            .crypto-card {
                padding: 16px;
            }

            .sidebar {
                width: 100%;
                right: -100%;
            }
        }