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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf1 100%);
    color: #1a1a1a;
    line-height: 1.6;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-content {
    animation: fadeIn 0.4s ease-out;
}

/* Responsive */
@media (min-width: 768px) {
    .user-name {
        display: block;
    }
}

@media (max-width: 767px) {
    .welcome-banner, .about-hero {
        padding: 32px 24px;
    }

    .welcome-banner h2, .about-hero h2 {
        font-size: 24px;
    }

    .stats-grid, .mission-vision-grid, .values-grid {
        grid-template-columns: 1fr;
    }

    .note-card-header {
        flex-direction: column;
        gap: 16px;
    }

    .note-footer {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }

    .form-actions {
        flex-direction: column;
    }

    .btn-secondary {
        width: 100%;
    }

    .btn-download {
        width: 100%;
        justify-content: center;
    }

    .profile-header-content {
        flex-direction: column;
        text-align: center;
    }

    .profile-grid {
        grid-template-columns: 1fr;
    }
}