/* --- Layout --- */

/* Top Bar / Navbar */
.top-bar {
    height: 64px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

body.mode-dark .top-bar {
    background: rgba(10, 10, 10, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--heading-color);
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.top-bar .nav-actions {
    position: relative;
}

.mobile-nav-toggle {
    display: none;
}

.mobile-nav-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 180px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    z-index: 60;
}

.mobile-nav-toggle .hamburger {
    width: 18px;
    height: 14px;
    display: inline-flex;
    flex-direction: column;
    justify-content: space-between;
}

.mobile-nav-toggle .hamburger span {
    height: 2px;
    width: 100%;
    border-radius: 999px;
    background: currentColor;
    transition: transform 0.25s ease, opacity 0.2s ease;
}

.mobile-nav-dropdown a {
    padding: 0.6rem 0.75rem;
    border-radius: 8px;
    color: var(--text-color);
    font-weight: 500;
}

.mobile-nav-dropdown a:hover {
    background: var(--surface-hover);
}

.nav-links-mobile {
    display: none;
    gap: 0.75rem;
    align-items: center;
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a:hover {
    color: var(--heading-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem;
    background: var(--bg-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-col h4 {
    margin-bottom: 1.5rem;
    color: var(--heading-color);
}

.footer-col a {
    display: block;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
}

.footer-col a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Grids & Sections */
.section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.ss-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* Utilities */
.hidden {
    display: none !important;
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-4 {
    gap: 1rem;
}