/* Container & Grids */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.section {
    padding: var(--section-padding);
}

.section-bg-alt {
    background-color: var(--color-bg-alt);
}

.section-bg-dark {
    background-color: var(--color-bg-dark);
    color: var(--color-white);
}

.section-bg-dark .section-desc,
.section-bg-dark p {
    color: var(--color-slate-400);
}

[data-theme="dark"] .section-bg-dark {
    background-color: var(--color-bg-footer);
}

.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-cols-6 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
}

.flex {
    display: flex;
}

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

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

.items-start {
    align-items: flex-start;
}

.justify-center {
    justify-content: center;
}

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

.wrap {
    flex-wrap: wrap;
}

.gap-2 {
    gap: var(--space-2);
}

.gap-3 {
    gap: var(--space-3);
}

.gap-4 {
    gap: var(--space-4);
}

.gap-6 {
    gap: var(--space-6);
}

.gap-8 {
    gap: var(--space-8);
}

/* Sticky Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition-base);
    padding: var(--space-4) 0;
}

[data-theme="dark"] .site-header {
    background-color: rgba(15, 23, 42, 0.9);
}

.site-header.is-scrolled {
    padding: var(--space-3) 0;
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

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

.nav-links {
    display: none;
    gap: var(--space-6);
    align-items: center;
}

@media (min-width: 1024px) {
    .nav-links {
        display: flex;
    }
}

.nav-links a {
    font-weight: 500;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    position: relative;
    padding: var(--space-2) 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-text);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: 2px;
}

/* Nav Tools */
.nav-tools {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Mobile Menu Drawer Base */
.mobile-menu-drawer {
    display: none;
}