/* ==========================================================================
   Layout — Container, grid, utilities
   ========================================================================== */

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

.container--narrow {
    max-width: var(--container-narrow);
}

.container--wide {
    max-width: var(--container-wide);
}

/* --- Grids --- */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-xl);
}

.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-3xl);
}

/* --- Two-column layout (PDP) --- */
.project-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--space-3xl);
    align-items: start;
}

.project-layout .project-content {
    min-width: 0;   /* prevent grid blowout from long content */
}

.project-layout .project-sidebar {
    position: sticky;
    top: var(--space-xl);
    min-width: 0;
}

/* --- Section spacing --- */
.site-main section,
.site-main .project-section {
    padding-top: var(--space-4xl);
    padding-bottom: var(--space-4xl);
}

.site-main section:first-child {
    padding-top: var(--space-3xl);
}

/* Override for project detail pages — tighter section gaps */
.project-single .project-section {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.project-single .project-section:first-of-type {
    padding-top: var(--space-lg);
}

/* --- Section titles --- */
.section-title {
    text-align: center;
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto var(--space-3xl);
}

.section-cta {
    text-align: center;
    margin-top: var(--space-2xl);
}

/* --- Accessibility --- */
.visually-hidden,
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link:focus {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100000;
    width: auto;
    height: auto;
    padding: var(--space-md) var(--space-lg);
    clip: auto;
    background: var(--color-primary);
    color: #fff;
    font-size: var(--font-size-lg);
    text-decoration: none;
}

/* --- Responsive --- */
@media (max-width: 968px) {
    .project-layout {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .project-layout .project-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .container {
        padding-left: var(--space-md);
        padding-right: var(--space-md);
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    h1 { font-size: var(--font-size-2xl); }
    h2 { font-size: var(--font-size-xl); }
    h3 { font-size: var(--font-size-lg); }

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

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

    .project-layout {
        gap: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .container {
        padding-left: var(--space-sm);
        padding-right: var(--space-sm);
    }

    .project-layout {
        gap: var(--space-md);
    }

    .project-grid {
        grid-template-columns: 1fr;
    }

    .post-grid {
        grid-template-columns: 1fr;
    }
}