/* ============================================================
   Brand identity / style guide page
   ============================================================ */

/* ── Logo panels ─────────────────────────────────────────────── */
.logo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-10);
}

@media (max-width: 800px) {
    .logo-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 500px) {
    .logo-grid { grid-template-columns: 1fr; }
}

.logo-panel {
    border-radius: var(--radius-lg);
    padding: var(--space-12) var(--space-10);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-8);
    border: 1px solid var(--color-border);
}

.logo-panel--light  { background: #ffffff; }
.logo-panel--dark   { background: var(--color-ink);    border-color: transparent; }
.logo-panel--navy   { background: var(--color-navy);   border-color: transparent; }

.logo-panel__label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.logo-panel--dark .logo-panel__label {
    color: rgba(255, 255, 255, 0.4);
}

.logo-panel img {
    max-width: 200px;
    width: 100%;
    height: auto;
}

/* ── Logo usage rules ────────────────────────────────────────── */
.usage-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    margin-top: var(--space-10);
}

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

.usage-col h3 {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-3);
    border-bottom: 2px solid;
}

.usage-col--do h3   { color: var(--color-success); border-color: var(--color-success); }
.usage-col--dont h3 { color: var(--color-error);   border-color: var(--color-error); }

.usage-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.usage-col li {
    font-size: 0.9rem;
    color: var(--color-text);
    line-height: 1.5;
    padding-left: var(--space-5);
    position: relative;
}

.usage-col li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.usage-col--do   li::before { background: var(--color-success); }
.usage-col--dont li::before { background: var(--color-error); }

/* ── Colour swatches ─────────────────────────────────────────── */
.swatch-group {
    margin-top: var(--space-10);
}

.swatch-group + .swatch-group {
    margin-top: var(--space-8);
}

.swatch-group__label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--space-4);
}

.swatch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--space-4);
}

.swatch-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-xs);
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
}

.swatch-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.swatch-card__block {
    height: 72px;
}

.swatch-card__info {
    padding: var(--space-3) var(--space-4);
    background: #fff;
}

.swatch-card__name {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-text);
    display: block;
    margin-bottom: 2px;
}

.swatch-card__hex {
    font-size: 0.75rem;
    color: var(--color-muted);
    font-family: 'SFMono-Regular', 'Consolas', monospace;
    display: block;
}

.swatch-card__var {
    font-size: 0.68rem;
    color: var(--color-muted);
    font-family: 'SFMono-Regular', 'Consolas', monospace;
    display: block;
    margin-top: 1px;
}

/* Copy tooltip */
.swatch-card.copied .swatch-card__hex::after {
    content: ' ✓';
    color: var(--color-success);
}

/* ── Typography specimens ────────────────────────────────────── */
.type-specimens {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    margin-top: var(--space-10);
}

.type-specimen {
    display: grid;
    grid-template-columns: 120px 1fr;
    align-items: baseline;
    gap: var(--space-6);
    padding-bottom: var(--space-8);
    border-bottom: 1px solid var(--color-border);
}

.type-specimen:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.type-specimen__meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.type-specimen__weight {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-muted);
}

.type-specimen__usage {
    font-size: 0.68rem;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.type-specimen__sample {
    color: var(--color-text);
    line-height: 1.2;
}

.type-charset {
    margin-top: var(--space-8);
    padding: var(--space-6);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    font-size: 1rem;
    color: var(--color-muted);
    letter-spacing: 0.05em;
    line-height: 2;
}

@media (max-width: 600px) {
    .type-specimen {
        grid-template-columns: 1fr;
        gap: var(--space-2);
    }
}

/* ── Button showcase ─────────────────────────────────────────── */
.btn-showcase {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    align-items: center;
    margin-top: var(--space-8);
}

.btn-showcase-dark {
    background: var(--color-ink);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
}