/* ============================================================
   layout.css — containers, section rhythm, grid system
   ============================================================ */

/* ── Container ───────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Section rhythm ──────────────────────────────────────── */
.section {
    padding: clamp(64px, 10vw, 120px) 0;
    position: relative;
}

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

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

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

.section-header {
    text-align: center;
    margin-bottom: clamp(40px, 6vw, 72px);
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
    font-size: clamp(1rem, 2vw, 1.125rem);
}

.section-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-cyan);
    margin-bottom: 12px;
}

/* ── Grid ────────────────────────────────────────────────── */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

/* ── Flex helpers ────────────────────────────────────────── */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.gap-8 {
    gap: 8px;
}

.gap-12 {
    gap: 12px;
}

.gap-16 {
    gap: 16px;
}

.gap-24 {
    gap: 24px;
}

.gap-32 {
    gap: 32px;
}

.gap-48 {
    gap: 48px;
}

/* ── Cards ───────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: border-color var(--transition), box-shadow var(--transition),
        transform var(--transition);
}

.card:hover {
    border-color: var(--border-bright);
    box-shadow: var(--glow-blue);
    transform: translateY(-2px);
}

.card-sm {
    padding: 20px 24px;
    border-radius: var(--radius-md);
}

/* ── Dividers ────────────────────────────────────────────── */
.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0;
}

/* ── Gradient masks (section blends) ─────────────────────── */
.fade-bottom::after {
    content: '';
    display: block;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(transparent, var(--bg-primary));
    pointer-events: none;
}

/* ── Noise texture overlay ───────────────────────────────── */
.noise::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
    opacity: 0.04;
    pointer-events: none;
    z-index: 0;
}

/* ── Scroll reveal (base state) ──────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: none;
}

/* ── Table wrapper (horizontal scroll on mobile) ──────────── */
.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

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

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {

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

    .container,
    .container-narrow,
    .container-wide {
        padding: 0 16px;
    }

    .card {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .btn-lg {
        padding: 13px 24px;
        font-size: 0.9375rem;
    }
}