/* ==========================================================================
   Layout — Container, Grids, Responsive
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.container--narrow {
    max-width: 900px;
}

/* --- Section spacing --- */
section {
    padding-top: 0;
    padding-bottom: 0;
}
.section + .section {
    padding-top: 24px;
}

.section--tight {
    padding-top: 24px;
    padding-bottom: 24px;
}

/* --- Cards Grid --- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--grid-gap);
}

@media (max-width: 1024px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Two Column Layout --- */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

@media (max-width: 768px) {
    .two-col {
        grid-template-columns: 1fr;
    }
}

/* --- Three Column Layout --- */
.three-col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--grid-gap);
}

@media (max-width: 768px) {
    .three-col {
        grid-template-columns: 1fr;
    }
}

/* --- Flex utilities --- */
.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-wrap {
    flex-wrap: wrap;
}

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

.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* --- Text alignment --- */
.text-center { text-align: center; }

/* --- Responsive container padding --- */
@media (max-width: 640px) {
    :root {
        --container-padding: 1rem;
    }
}

/* --- Flush content against navbar and footer --- */
.site-content > *:first-child {
    margin-top: 0;
}
.site-content > *:last-child {
    margin-bottom: 0;
}