/* =============================================
   Surakschit Nirman — Layout System
   Grid, containers, sections, responsive
   ============================================= */

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

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

/* ─── Sections ───────────────────────────────────────────── */
.section {
    padding: var(--section-py) 0;
    position: relative;
    overflow: hidden;
}

.section-sm {
    padding: var(--section-py-sm) 0;
}

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

.section-darker {
    background: var(--bg-darker);
    color: var(--text-inverse);
}

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

.section-gradient {
    background: linear-gradient(180deg, #0A192F 0%, #112240 50%, #0A192F 100%);
    color: var(--text-inverse);
}

/* ─── Grid System ────────────────────────────────────────── */
.grid {
    display: grid;
    gap: var(--space-8);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

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

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

/* ─── Flex Utilities ─────────────────────────────────────── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.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); }
.gap-12 { gap: var(--space-12); }

/* ─── Spacing ────────────────────────────────────────────── */
.mt-auto { margin-top: auto; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }

/* ─── Page Banner ────────────────────────────────────────── */
.page-banner {
    position: relative;
    padding: clamp(6rem, 4rem + 8vw, 10rem) 0 clamp(3rem, 2rem + 4vw, 5rem);
    background: var(--bg-dark);
    color: var(--text-inverse);
    overflow: hidden;
}

.page-banner h1,
.page-banner h2,
.page-banner h3,
.page-banner-title {
    color: var(--text-inverse) !important;
}

.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(7, 26, 46, 0.96) 0%, rgba(13, 39, 69, 0.90) 100%);
    z-index: 1;
}

.page-banner .container {
    position: relative;
    z-index: 2;
}

.page-banner-title {
    font-size: var(--text-6xl);
    font-weight: var(--fw-extrabold);
    color: var(--text-inverse) !important;
    margin-bottom: var(--space-4);
}

.page-banner-subtitle {
    font-size: var(--text-lg);
    color: var(--steel-300);
    max-width: 600px;
}

/* ─── Breadcrumbs ────────────────────────────────────────── */
.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    margin-top: var(--space-6);
}

.breadcrumb-item {
    color: var(--steel-400);
}

.breadcrumb-item a {
    color: var(--gold-400);
    transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
    color: var(--gold-300);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: '›';
    margin-right: var(--space-2);
    color: var(--steel-600);
}

.breadcrumb-item.active {
    color: var(--steel-300);
}

/* ─── Responsive Grid ────────────────────────────────────── */
@media (max-width: 1200px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 992px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-6 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .grid-4,
    .grid-3,
    .grid-2 { grid-template-columns: 1fr; }
    .grid-6 { grid-template-columns: repeat(2, 1fr); }
    .grid-auto-fit { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .grid-6 { grid-template-columns: 1fr; }
}

/* ─── Scroll Progress Bar ────────────────────────────────── */
.scroll-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, var(--gold-600), var(--gold-400), #fff);
    box-shadow: 0 0 10px rgba(212, 168, 83, 0.8), 0 0 5px rgba(212, 168, 83, 0.5);
    z-index: 100001;
    transition: width 0.1s ease-out;
    pointer-events: none;
}