/*
|==========================================================================
| LAYOUT — Grid, Containers, Responsive
|==========================================================================
|
| References tokens from tokens.css — NO hardcoded values here.
|
*/

/* ── Container ────────────────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-inline: auto;
    padding-inline: var(--space-4);
}

.container-sm { max-width: var(--container-sm); }
.container-md { max-width: var(--container-md); }
.container-lg { max-width: var(--container-lg); }
.container-xl { max-width: var(--container-xl); }
.container-2xl { max-width: var(--container-2xl); }

/* ── Section ──────────────────────────────────────────────────────────── */
.section {
    padding-block: var(--space-16);
}

.section-sm {
    padding-block: var(--space-8);
}

.section-lg {
    padding-block: var(--space-24);
}

/* ── Grid System ──────────────────────────────────────────────────────── */
.grid {
    display: grid;
    gap: var(--space-6);
}

.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 grid */
.grid-auto {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* Responsive Grid Columns System */
.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-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.col-span-1 { grid-column: span 1 / span 1; }
.col-span-2 { grid-column: span 2 / span 2; }
.col-span-3 { grid-column: span 3 / span 3; }
.col-span-4 { grid-column: span 4 / span 4; }
.col-span-5 { grid-column: span 5 / span 5; }
.col-span-6 { grid-column: span 6 / span 6; }
.col-span-7 { grid-column: span 7 / span 7; }
.col-span-8 { grid-column: span 8 / span 8; }
.col-span-9 { grid-column: span 9 / span 9; }
.col-span-10 { grid-column: span 10 / span 10; }
.col-span-11 { grid-column: span 11 / span 11; }
.col-span-12 { grid-column: span 12 / span 12; }

@media (min-width: 640px) {
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .sm\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .md\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .lg\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
    .lg\:grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
    .lg\:col-span-4 { grid-column: span 4 / span 4; }
    .lg\:col-span-5 { grid-column: span 5 / span 5; }
    .lg\:col-span-6 { grid-column: span 6 / span 6; }
    .lg\:col-span-7 { grid-column: span 7 / span 7; }
    .lg\:col-span-8 { grid-column: span 8 / span 8; }
}


/* ── Flex Utilities ───────────────────────────────────────────────────── */
.flex          { display: flex; }
.flex-col      { flex-direction: column; }
.flex-wrap     { flex-wrap: wrap; }
.flex-center   { display: flex; align-items: center; justify-content: center; }
.flex-between  { display: flex; align-items: center; justify-content: space-between; }
.flex-start    { display: flex; align-items: center; justify-content: flex-start; }
.flex-end      { display: flex; align-items: center; justify-content: flex-end; }
.items-start   { align-items: flex-start; }
.items-stretch { align-items: stretch; }
.flex-1        { flex: 1; }

.gap-1  { gap: var(--space-1); }
.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); }

/* ── Page Layout ──────────────────────────────────────────────────────── */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page-content {
    flex: 1;
}

/* ── Header ───────────────────────────────────────────────────────────── */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    height: var(--header-height);
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

[data-theme="light"] .site-header {
    background-color: rgba(255, 255, 255, 0.85);
}

[data-theme="dark"] .site-header {
    background-color: rgba(11, 17, 32, 0.8);
    border-bottom: 1px solid rgba(148, 163, 184, 0.14);
}

.site-header .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Brand variants follow the explicit site theme from one shared component. */
.site-brand-logo-pair {
    display: inline-grid;
    flex: 0 0 auto;
    align-items: center;
}

.site-brand-logo-pair > .site-brand-logo {
    grid-area: 1 / 1;
}

.site-brand-logo--on-dark {
    display: none;
}

[data-theme="dark"] .site-brand-logo--on-light:not(.site-brand-logo--universal) {
    display: none;
}

[data-theme="dark"] .site-brand-logo--on-dark {
    display: block;
}

/* ── Footer ───────────────────────────────────────────────────────────── */
.site-footer {
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding-block: var(--space-12);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
}

.footer-bottom {
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* ── Hero Section ─────────────────────────────────────────────────────── */
.hero {
    position: relative;
    padding-block: var(--space-24);
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    opacity: 0.05;
}

/* ========================================================================
   RESPONSIVE BREAKPOINTS
   ======================================================================== */

/* Tablet: < 1024px */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }

    .section { padding-block: var(--space-12); }

    .hide-tablet { display: none !important; }
}

/* Mobile: < 768px */
@media (max-width: 768px) {
    .grid-4,
    .grid-3,
    .grid-2 { grid-template-columns: 1fr; }

    .container { padding-inline: var(--space-4); }

    .section { padding-block: var(--space-8); }

    .hero { padding-block: var(--space-12); }

    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }

    .hide-mobile { display: none !important; }
    .show-mobile { display: block !important; }
}

/* Small Mobile: < 480px */
@media (max-width: 480px) {
    html { font-size: 14px; }
    .container { padding-inline: var(--space-3); }
}