/* ===== SHARED COMPONENT STYLES ===== */

/* Base design tokens — fallbacks for pages that define their own :root block.
   These ensure header-styles.css and other shared components always have values. */
:root {
  --bg:      oklch(98% 0.008 60);
  --surface: oklch(99.5% 0.004 60);
  --fg:      oklch(18% 0.012 60);
  --muted:   oklch(52% 0.008 60);
  --border:  oklch(90% 0.006 60);
  --accent:  oklch(56% 0.18 250);
  --accent-subtle: oklch(97% 0.02 250);

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", sans-serif;

  --space-1: 4px;  --space-2: 8px;   --space-3: 12px;  --space-4: 16px;
  --space-6: 24px; --space-8: 32px;  --space-10: 40px; --space-12: 48px;

  --text-xs:   12px;
  --text-sm:   14px;
  --text-base: 16px;
  --text-lg:   18px;
  --text-xl:   20px;

  --duration-fast:   150ms;
  --duration-normal: 250ms;
  --transition: cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 3px oklch(18% 0.012 60 / 0.08);
  --shadow-md: 0 4px 12px oklch(18% 0.012 60 / 0.10);
  --shadow-lg: 0 8px 24px oklch(18% 0.012 60 / 0.12);

  /* Semantic color tokens */
  --success: oklch(54% 0.15 145);
  --danger:  oklch(58% 0.18 25);
  --warning: oklch(68% 0.16 85);
}

/* Footer */
.footer {
  padding: var(--space-12, 48px) var(--space-8, 32px);
  border-top: 0.5px solid oklch(from var(--border, oklch(90% 0.006 60)) l c h / 0.3);
  background: var(--bg, oklch(98% 0.008 60));
}

.footer-container {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-8, 32px);
}

.footer-text {
  font-size: 13px;
  color: var(--muted, oklch(52% 0.008 60));
}

.footer-links {
  display: flex;
  gap: var(--space-6, 24px);
}

.footer-link {
  font-size: 13px;
  color: var(--muted, oklch(52% 0.008 60));
  text-decoration: none;
  transition: color 150ms cubic-bezier(0.16, 1, 0.3, 1);
}

.footer-link:hover {
  color: var(--fg, oklch(18% 0.012 60));
}

/* Username links */
.username-link {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--transition);
}

.username-link:hover {
  color: var(--accent);
}

/* Tag items (sidebar) */
.popular-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 5px 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 980px;
  font-size: 13px;
  font-family: var(--font-sans);
  color: var(--fg);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--duration-fast) var(--transition),
              border-color var(--duration-fast) var(--transition),
              color var(--duration-fast) var(--transition);
}

.tag-item:hover {
  background: oklch(from var(--accent) 97% 0.02 h);
  border-color: oklch(from var(--accent) 80% 0.08 h);
  color: var(--accent);
}

.tag-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.tag-item.selected {
  background: var(--accent);
  border-color: var(--accent);
  color: oklch(99% 0.004 250);
}

.tag-item-name {
  font-weight: 500;
  letter-spacing: -0.01em;
}

.tag-item-count {
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-weight: 400;
  transition: color var(--duration-fast) var(--transition);
}

.tag-item:hover .tag-item-count {
  color: oklch(from var(--accent) 60% 0.12 h);
}

.tag-item.selected .tag-item-count {
  color: oklch(99% 0.004 250 / 0.7);
}

.show-more-tags-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 5px 10px;
  background: transparent;
  border: 1px dashed var(--border);
  border-radius: 980px;
  font-size: 13px;
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: color var(--duration-fast) var(--transition),
              border-color var(--duration-fast) var(--transition);
}

.show-more-tags-btn:hover {
  color: var(--fg);
  border-color: var(--fg);
}

.show-more-tags-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Active tag pills (filter display) */
.active-tags-filter {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.filter-label {
  font-size: var(--text-sm);
  color: var(--muted);
  font-weight: 500;
  flex-shrink: 0;
}

.active-tags-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.active-tag-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px 8px 4px 10px;
  background: var(--accent);
  color: white;
  border-radius: 980px;
  font-size: var(--text-xs);
  font-weight: 600;
  animation: pillSlideIn 200ms var(--transition);
  flex-shrink: 0;
}

@keyframes pillSlideIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.active-tag-pill-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  background: oklch(from var(--accent) calc(l * 0.85) c h);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--transition);
  font-size: 11px;
  line-height: 1;
  color: white;
}

.active-tag-pill-remove:hover {
  background: oklch(from var(--accent) calc(l * 0.7) c h);
  transform: scale(1.15);
}