/* ============================================
   CARIOCANDO — Layout System
   Grid, containers, and structural layouts
   ============================================ */

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

.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); }
.container-full { max-width: 100%; }

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

.section-lg {
    padding-top: var(--space-20);
    padding-bottom: var(--space-20);
}

.section-xl {
    padding-top: var(--space-24);
    padding-bottom: var(--space-24);
}

/* ── Section backgrounds ── */
.section--white { background-color: var(--branco); }
.section--off-white { background-color: var(--off-white); }
.section--light { background-color: var(--azul-ceu); }
.section--dark { background: var(--gradient-azul); color: var(--branco); }
.section--azul { background-color: var(--azul-profundo); color: var(--branco); }

/* ── CSS Grid ── */
.grid {
    display: grid;
    gap: var(--gutter);
}

.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-5 { grid-template-columns: repeat(5, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

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

.grid-auto-sm {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.grid-auto-lg {
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
}

/* ── Flexbox ── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.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: flex-start;
}
.flex-end {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

.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-10 { gap: var(--space-10); }
.gap-12 { gap: var(--space-12); }

.flex-1 { flex: 1; }
.flex-shrink-0 { flex-shrink: 0; }

/* ── Featured layouts ── */
.layout-featured {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: var(--gutter);
}

.layout-featured .featured-main {
    grid-row: 1 / 3;
}

/* ── Sidebar layout ── */
.layout-sidebar {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: var(--space-12);
    align-items: start;
}

/* ── Masonry-like layout ── */
.layout-mosaic {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 280px);
    gap: var(--space-4);
}

.layout-mosaic .mosaic-main {
    grid-column: 1 / 3;
    grid-row: 1 / 3;
}

.layout-mosaic .mosaic-item:nth-child(2) {
    grid-column: 3 / 4;
}

.layout-mosaic .mosaic-item:nth-child(3) {
    grid-column: 4 / 5;
}

.layout-mosaic .mosaic-item:nth-child(4) {
    grid-column: 3 / 5;
}

/* ── Scroll containers ── */
.scroll-x {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: var(--gutter);
    padding-bottom: var(--space-2);
}

.scroll-x::-webkit-scrollbar {
    display: none;
}

.scroll-x > * {
    scroll-snap-align: start;
    flex-shrink: 0;
}

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

.page-wrapper main {
    flex: 1;
}

/* ── Spacing utilities ── */
.mt-auto { margin-top: auto; }
.mb-0 { margin-bottom: 0; }
.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); }

/* ── Width utilities ── */
.w-full { width: 100%; }
.max-w-prose { max-width: 65ch; }
.max-w-lg { max-width: 800px; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ── Responsive breakpoints via grid ── */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-5 { grid-template-columns: repeat(3, 1fr); }
    .grid-6 { grid-template-columns: repeat(3, 1fr); }
    .layout-sidebar { grid-template-columns: 1fr; }
    .layout-mosaic {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(2, 200px);
    }
    .layout-mosaic .mosaic-main {
        grid-column: 1 / 3;
    }
    .layout-mosaic .mosaic-item:nth-child(2),
    .layout-mosaic .mosaic-item:nth-child(3) {
        grid-column: auto;
    }
    .layout-mosaic .mosaic-item:nth-child(4) {
        grid-column: 1 / 3;
    }
}

@media (max-width: 768px) {
    .container {
        padding-left: var(--space-4);
        padding-right: var(--space-4);
    }
    .section {
        padding-top: var(--space-12);
        padding-bottom: var(--space-12);
    }
    .section-lg, .section-xl {
        padding-top: var(--space-16);
        padding-bottom: var(--space-16);
    }
    .grid-2, .grid-3, .grid-4, .grid-5, .grid-6 {
        grid-template-columns: 1fr;
    }
    .layout-featured {
        grid-template-columns: 1fr;
    }
    .layout-featured .featured-main {
        grid-row: auto;
    }
    .layout-mosaic {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }
    .layout-mosaic .mosaic-main,
    .layout-mosaic .mosaic-item:nth-child(4) {
        grid-column: auto;
        grid-row: auto;
    }
}