/*
 * layout.css — Containers, Grid & Section Patterns
 * Digital Apache v3
 *
 * PURPOSE: Structural layout only.
 * Contains the global .container, .section modifiers,
 * and reusable grid/flex utility classes.
 * No component styling here.
 *
 * DEPENDENCIES: tokens.css → reset.css → base.css → layout.css
 * LOAD ORDER: Fourth.
 */

/* ============================================
   CONTAINER
============================================ */

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

/* ============================================
   SECTION PATTERNS
   Matches MASTER.md Section 13
============================================ */

.section {
    padding-top: var(--section-padding-y);
    padding-bottom: var(--section-padding-y);
    position: relative;
}

.section--flush {
    padding-top: 0;
    padding-bottom: 0;
}

.section--narrow .container {
    max-width: 800px;
}

/* Section Background Modifiers */
.section--light {
    background-color: var(--color-bg-light);
}

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

/* Ensure text elements flip to white on dark sections */
.section--dark .section__title,
.section--dark .section__subtitle,
.section--dark p {
    color: var(--color-white);
}

.section--primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.section--primary .section__title,
.section--primary .section__subtitle,
.section--primary p {
    color: var(--color-white);
}

/* ============================================
   GRID SYSTEM (BEM-lite utilities)
============================================ */

.grid {
    display: grid;
    gap: var(--space-8);
}

/* Gap modifiers */
.grid--gap-sm {
    gap: var(--space-4);
}

.grid--gap-md {
    gap: var(--space-6);
}

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

.grid--gap-none {
    gap: 0;
}

/* Desktop grid columns (Mobile handled in responsive.css) */
.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

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

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

/* ============================================
   FLEX UTILITIES
============================================ */

.flex {
    display: flex;
}

.flex--wrap {
    flex-wrap: wrap;
}

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

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

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

.flex--align-center {
    align-items: center;
}

/* Gap modifiers */
.flex--gap-sm {
    gap: var(--space-2);
}

.flex--gap-md {
    gap: var(--space-4);
}

.flex--gap-lg {
    gap: var(--space-6);
}

/* End of layout.css */