/* components.css — buttons, cards, badges, nav elements, doc meta */

/* ── Buttons ─────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  font-weight: 600;
  letter-spacing: 0.1px;
  transition: background var(--transition-fast), color var(--transition-fast),
              box-shadow var(--transition-fast), transform var(--transition-fast),
              border-color var(--transition-fast);
  cursor: pointer;
  border: 1.5px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-pale);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--color-surface-high);
  color: var(--color-primary);
}

.btn-sm {
  padding: 8px 16px;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

/* ── Card ────────────────────────────────────────────────────────────── */

.card {
  background: var(--color-surface-lowest);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base),
              border-color var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-secondary-light);
  transform: translateY(-2px);
}

.card-body {
  padding: var(--space-lg);
}

/* ── Badge ───────────────────────────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.badge-primary {
  background: var(--color-primary-pale);
  color: var(--color-primary);
}

.badge-muted {
  background: var(--color-surface-high);
  color: var(--color-text-muted);
}

.badge-success {
  background: #E8F5E9;
  color: var(--color-success);
}

[data-theme="dark"] .badge-success {
  background: rgba(129, 199, 132, 0.15);
  color: #81C784;
}

[data-theme="dark"] .badge-muted {
  background: var(--color-surface-low);
}

/* ── Document Icon Box ───────────────────────────────────────────────── */

.doc-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-pale);
  flex-shrink: 0;
}

.doc-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ── Divider ─────────────────────────────────────────────────────────── */

.divider {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin: var(--space-lg) 0;
}

/* ── Breadcrumb ──────────────────────────────────────────────────────── */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb-sep {
  color: var(--color-border);
  font-size: 10px;
  line-height: 1;
}

/* ── Document Metadata Bar ───────────────────────────────────────────── */

.doc-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: var(--space-xxl);
}

.doc-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.doc-meta-item svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* ── Prev/Next Document Navigation ──────────────────────────────────── */

.doc-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-xxl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-divider);
}

.doc-nav-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  background: var(--color-surface-lowest);
  transition: border-color var(--transition-fast), background var(--transition-fast),
              transform var(--transition-fast), box-shadow var(--transition-fast);
}

.doc-nav-item:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-pale);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.doc-nav-item.next {
  text-align: right;
}

.doc-nav-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.doc-nav-item.next .doc-nav-label {
  justify-content: flex-end;
}

.doc-nav-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.3;
}

.doc-nav-placeholder {
  /* empty column when only one nav direction exists */
}

/* ── Back to Home ────────────────────────────────────────────────────── */

.back-home {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  padding: var(--space-xs) 0;
  margin-bottom: var(--space-xl);
  transition: color var(--transition-fast);
  text-decoration: none;
}

.back-home:hover {
  color: var(--color-primary);
}

.back-home svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* ── Footer Sub-components ───────────────────────────────────────────── */

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  text-decoration: none;
}

.footer-brand img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.footer-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 300px;
}

.footer-section-title {
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-copy {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.footer-contact-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  line-height: 1.5;
}

.footer-contact-row svg {
  width: 14px;
  height: 14px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-contact-row a {
  color: var(--color-primary);
  text-decoration: none;
}

.footer-contact-row a:hover {
  text-decoration: underline;
}

/* ── Focus Visible (accessibility) ──────────────────────────────────── */

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.doc-nav-item:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── Responsive ──────────────────────────────────────────────────────── */

@media (max-width: 560px) {
  .doc-nav {
    grid-template-columns: 1fr;
  }

  .doc-nav-item.next {
    text-align: left;
  }

  .doc-nav-item.next .doc-nav-label {
    justify-content: flex-start;
  }
}