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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(180deg, #581c87 0%, #3730a3 50%, #1e293b 100%);
            min-height: 100vh;
            padding: 24px;
            color: white;
        }

        .container {
            max-width: 480px;
            margin: 0 auto;
            padding-bottom: 80px;
        }

.profile-card {
    background: rgba(30, 41, 59, 0.5);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    padding: 32px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    min-height: calc(100vh - 140px);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

        .avatar-container {
            display: flex;
            justify-content: center;
            margin-bottom: 24px;
        }

        .avatar {
            width: 96px;
            height: 96px;
            border-radius: 50%;
            border: 4px solid #a855f7;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
        }

        .avatar-placeholder {
            width: 96px;
            height: 96px;
            border-radius: 50%;
            border: 4px solid #a855f7;
            background: linear-gradient(135deg, #9333ea 0%, #6366f1 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 40px;
            font-weight: bold;
            color: white;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
        }

        .username-section {
            text-align: center;
            margin-bottom: 24px;
        }

        .username-label {
            color: #9ca3af;
            font-size: 14px;
            margin-bottom: 4px;
        }

        .username {
            font-size: 20px;
            font-weight: 600;
            color: white;
        }

        .info-card {
            background: rgba(51, 65, 85, 0.5);
            border-radius: 16px;
            padding: 16px;
            margin-bottom: 16px;
        }

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

        .info-label {
            color: #9ca3af;
            font-size: 14px;
        }

        .info-value {
            color: white;
            font-family: 'Courier New', monospace;
        }

        .tokens-card {
            background: linear-gradient(135deg, rgba(147, 51, 234, 0.2) 0%, rgba(99, 102, 241, 0.2) 100%);
            border: 1px solid rgba(168, 85, 247, 0.3);
            border-radius: 16px;
            padding: 24px;
        }

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

        .tokens-info {
            flex: 1;
        }

        .tokens-label {
            color: #9ca3af;
            font-size: 14px;
            margin-bottom: 4px;
        }

        .tokens-value {
            font-size: 32px;
            font-weight: bold;
            color: white;
        }

        .tokens-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
        }

        .tokens-icon svg {
            width: 32px;
            height: 32px;
            color: white;
        }

        .loading {
            text-align: center;
            padding: 40px;
            font-size: 20px;
        }

        .error {
            text-align: center;
            padding: 40px;
            color: #f87171;
        }

        .error-title {
            font-size: 20px;
            margin-bottom: 8px;
        }

        .error-message {
            font-size: 14px;
        }

        .navbar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(30, 41, 59, 0.95);
            backdrop-filter: blur(10px);
            border-top: 1px solid rgba(168, 85, 247, 0.3);
            padding: 12px 0;
            box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.3);
        }

        .navbar-content {
            max-width: 480px;
            margin: 0 auto;
            display: flex;
            justify-content: space-around;
            align-items: center;
        }

        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            padding: 8px 16px;
            cursor: pointer;
            transition: all 0.3s;
            border-radius: 12px;
            text-decoration: none;
        }

        .nav-item:hover {
            background: rgba(168, 85, 247, 0.2);
        }

        .nav-item.active {
            background: rgba(168, 85, 247, 0.3);
        }

        .nav-item svg {
            width: 24px;
            height: 24px;
            color: #9ca3af;
            transition: color 0.3s;
        }

        .nav-item.active svg {
            color: #a855f7;
        }

        .nav-item span {
            font-size: 12px;
            color: #9ca3af;
            transition: color 0.3s;
        }

        .nav-item.active span {
            color: #a855f7;
        }

        .buy-tokens-btn {
    width: 100%;
    margin-top: 16px;
    padding: 16px;
    background: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
    border: none;
    border-radius: 16px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

.buy-tokens-btn:active {
    transform: scale(0.98);
}

.buy-tokens-btn svg {
    width: 24px;
    height: 24px;
}