/* Layout */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    display: flex;
    align-items: center;
}

@media (prefers-color-scheme: dark) {
    .navbar {
        background-color: rgba(0, 0, 0, 0.8);
    }
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text-main);
    text-decoration: none;
}

.logo:hover {
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--color-text-secondary);
    font-size: var(--font-size-small);
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text-main);
    text-decoration: none;
}

/* Mobile Menu Toggle (Hidden by default on desktop) */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.menu-icon {
    width: 24px;
    height: 2px;
    background-color: var(--color-text-main);
    position: relative;
    transition: var(--transition-fast);
}

.menu-icon::before,
.menu-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-main);
    left: 0;
    transition: var(--transition-fast);
}

.menu-icon::before {
    top: -8px;
}

.menu-icon::after {
    bottom: -8px;
}

/* Footer */
.footer {
    background-color: var(--color-bg-alt);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-column h4 {
    font-size: var(--font-size-small);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-main);
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: var(--color-text-secondary);
    font-size: var(--font-size-small);
}

.footer-column a:hover {
    color: var(--color-text-main);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: var(--font-size-small);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Responsive */

/* iPhone and mobile devices */
@media (max-width: 576px) {

    /* Increase margins for inner pages (About, Experience, Contact) */
    .page-inner .container {
        padding: 0 1.5rem;
    }

    .navbar {
        height: 56px;
    }

    :root {
        --header-height: 56px;
    }

    .logo {
        font-size: 1.125rem;
    }

    .nav-links {
        gap: 0;
    }

    .nav-link {
        padding: 0.875rem 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-link:last-child {
        border-bottom: none;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-h1: 2.5rem;
        --font-size-h2: 2rem;
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .nav-links {
        display: none;
        /* Hide on mobile, will be toggled via JS */
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--color-bg);
        flex-direction: column;
        padding: 1.5rem;
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }

    .nav-links.open {
        display: flex;
    }

    .menu-toggle {
        display: block;
        padding: 0.75rem;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .footer {
        padding: 2rem 0;
        margin-top: 3rem;
    }

    .footer-content {
        gap: 1.5rem;
    }
}