/* ============================================
   Architecture and Data Flow page (docs/architecture.html)
   Builds on styles.css and docs.css; only what that page adds.
   ============================================ */

/* Less padding than other docs pages: the diagrams need the width. */
.arch-page .docs-main {
    padding: var(--spacing-2xl);
}

.arch-page .docs-content {
    padding: var(--spacing-2xl) var(--spacing-3xl);
}

@media (max-width: 768px) {
    .arch-page .docs-main {
        padding: var(--spacing-md);
    }

    .arch-page .docs-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

.arch-lede {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 860px;
}

.arch-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.arch-end {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.arch-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0 var(--spacing-xl);
}

/* Summary facts and security controls: a grid of small cards. */
.arch-facts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.arch-fact {
    background: rgba(10, 14, 26, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid var(--color-primary-blue);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
}

.arch-fact strong {
    display: block;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.arch-fact span {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.55;
}

/* Figures: the diagram's own dark background sits in a framed card. */
.arch-figure {
    margin: var(--spacing-lg) 0 var(--spacing-md);
}

.arch-figure > a {
    display: block;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #0a0e1a;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.arch-figure > a:hover,
.arch-figure > a:focus-visible {
    border-color: rgba(91, 79, 184, 0.7);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

.arch-figure img {
    display: block;
    width: 100%;
    height: auto;
}

.arch-figure figcaption {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.arch-open {
    margin-left: var(--spacing-sm);
    white-space: nowrap;
}

.arch-notes {
    margin: var(--spacing-md) 0 var(--spacing-xl);
}

.arch-notes li {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-secondary);
}

/* Wide tables scroll inside their own box on a phone. */
.arch-table {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.arch-table .properties-table {
    min-width: 720px;
}

.arch-key {
    font-weight: 800;
    color: #7fb0ee;
    width: 2.5rem;
}

.arch-table td {
    vertical-align: top;
}

.arch-table td:first-child code {
    white-space: nowrap;
}

/* A button in the page body keeps its own white text, not the link colour. */
.docs-content a.btn-primary,
.docs-content a.btn-primary:hover {
    color: var(--color-white);
}