:root {
  /* DisplayKit theme tokens (light default) */
  --bg-primary: #f8f8f8;
  --bg-secondary: #f0f0f0;
  --bg-tertiary: #e8e8e8;
  --border-color: #d0d0d0;
  --text-primary: #2a2a2a;
  --text-secondary: #555555;
  --text-tertiary: #777777;
  --input-bg: #f8f8f8;
  --input-border: #c0c0c0;
  --btn-primary: #FF6D1F;
  --btn-primary-hover: #ff8533;
  --btn-secondary: #e8e8e8;
  --btn-secondary-border: #c8c8c8;
  --btn-danger: #f97373;
  --outline-color: #FF6D1F;
  --glow-primary: rgba(255, 109, 31, 0.08);
  --glow-secondary: rgba(255, 109, 31, 0.12);
  --card-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* Scrollbars (Windows/Chrome default is bright; theme them) */
  --scrollbar-track: rgba(0, 0, 0, 0.06);
  --scrollbar-thumb: rgba(0, 0, 0, 0.22);
  --scrollbar-thumb-hover: rgba(0, 0, 0, 0.34);
}

/* Dark theme overrides (match DisplayKit) */
html[data-theme="dark"] {
  --bg-primary: #1a1a1a;
  --bg-secondary: #252525;
  --bg-tertiary: #303030;
  --border-color: #404040;
  --text-primary: #f0f0f0;
  --text-secondary: #c8c8c8;
  --text-tertiary: #909090;
  --input-bg: #1a1a1a;
  --input-border: #454545;
  --btn-secondary: #303030;
  --btn-secondary-border: #404040;
  --glow-primary: rgba(255, 109, 31, 0.25);
  --glow-secondary: rgba(255, 109, 31, 0.4);
  --card-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);

  --scrollbar-track: rgba(255, 255, 255, 0.06);
  --scrollbar-thumb: rgba(255, 255, 255, 0.18);
  --scrollbar-thumb-hover: rgba(255, 255, 255, 0.28);
}

/* Minimal cross-tool defaults (kept intentionally small to avoid layout conflicts) */
html, body {
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* Cross-tool scrollbar theming */
* {
  scrollbar-width: thin; /* Firefox */
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track); /* Firefox */
}

/* Chromium/WebKit */
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
*::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}
*::-webkit-scrollbar-thumb {
  background-color: var(--scrollbar-thumb);
  border-radius: 999px;
  border: 2px solid var(--scrollbar-track);
}
*::-webkit-scrollbar-thumb:hover {
  background-color: var(--scrollbar-thumb-hover);
}

/* Shared "Tools" navigation card used on standalone tool pages */
.dk-tools-card {
  border: 2px solid rgba(255, 109, 31, 0.45);
  background: linear-gradient(
    135deg,
    rgba(255, 109, 31, 0.14),
    rgba(255, 109, 31, 0.06)
  );
  box-shadow:
    0 14px 32px rgba(0, 0, 0, 0.16),
    0 0 0 1px rgba(255, 109, 31, 0.10);
  border-radius: 16px;
  padding: 14px 14px;
}

.dk-tools-title {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--btn-primary);
  margin: 0 0 10px 0;
}

.dk-tools-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.dk-tool-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 109, 31, 0.18);
  background: rgba(255, 255, 255, 0.75);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
  font-size: 13px;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

html[data-theme="dark"] .dk-tool-link {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.dk-tool-link:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 109, 31, 0.55);
  background: rgba(255, 255, 255, 0.92);
}

html[data-theme="dark"] .dk-tool-link:hover {
  background: rgba(255, 255, 255, 0.12);
}

.dk-tool-link.active {
  border-color: rgba(255, 109, 31, 0.65);
  box-shadow: 0 0 0 1px rgba(255, 109, 31, 0.18);
}

.dk-tool-link::after {
  content: "↗";
  opacity: 0.7;
  margin-left: 2px;
}