/* 組件範例：按鈕與標籤 */
/* 按鈕 Button */
.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text);
  padding: 8px 12px;
  border-radius: var(--radius-6);
  cursor: pointer;
  transition:
    transform 0.15s var(--ease-out),
    background 0.2s var(--ease-out);
}
/* Ensure ghost button text never flips to link blue/purple */
a.button.ghost:link,
a.button.ghost:visited { color: #ffffff !important; }

/* --- Utilities: spacing and text helpers --- */
.mt-6 { margin-top: 6px !important; }
.mt-12 { margin-top: 12px !important; }
.mt-24 { margin-top: 24px !important; }
.my-16 { margin-top: 16px !important; margin-bottom: 16px !important; }
.desc { color: var(--muted) !important; }
/* Visually hidden but accessible label/text */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}
/* Content-visibility helper for offscreen sections */
.cv-auto {
  content-visibility: auto;
  contain-intrinsic-size: 1px 600px;
}
.button:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.06);
}
.button.primary {
  background: var(--color-primary);
  color: #0b0f19;
  border-color: transparent;
}

/* Hero CTA: make primary button pop against pastel/blurred backgrounds */
#home-go.button.primary,
.hero .button.primary#home-go {
  color: #ffffff;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--color-accent) 92%, #ffffff 0%) 0%,
    #7c3aed 55%,
    #4f46e5 100%
  );
  border-color: transparent;
  box-shadow:
    0 10px 22px rgba(59, 130, 246, 0.35),
    0 2px 6px rgba(0, 0, 0, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
}
#home-go.button.primary:hover,
.hero .button.primary#home-go:hover {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--color-accent) 96%, #ffffff 0%) 0%,
    #8b5cf6 50%,
    #6366f1 100%
  );
  transform: translateY(-2px);
  box-shadow:
    0 12px 28px rgba(59, 130, 246, 0.45),
    0 3px 8px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
#home-go.button.primary:active,
.hero .button.primary#home-go:active {
  transform: translateY(0);
  filter: saturate(105%);
}
#home-go.button.primary:focus-visible,
.hero .button.primary#home-go:focus-visible {
  outline: 2px solid #a78bfa; /* violet focus ring to match gradient */
  outline-offset: 2px;
}
.button.ghost {
  /* Strong, non-blur default so it looks correct even without decor */
  background:
    linear-gradient(135deg, #7c3aed, #3b82f6) !important;
  color: #ffffff !important;
  border-color: rgba(148, 163, 184, 0.30) !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 4px 12px rgba(0,0,0,0.18) !important;
  /* Ensure anchor-based buttons don't inherit blue link color */
  --link-color: #ffffff;
  --link-color-hover: #ffffff;
}
.button.ghost:hover {
  background:
    linear-gradient(180deg, rgba(15,23,42,0.66), rgba(15,23,42,0.50)),
    linear-gradient(180deg, rgba(96,165,250,0.24), rgba(96,165,250,0.12));
  border-color: color-mix(in oklab, #60a5fa 70%, white 30%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 6px 14px rgba(2,132,199,0.22);
}
.button.danger {
  background: var(--color-danger);
  color: #0b0f19;
  border-color: transparent;
}

/* 標籤 Tag */
.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  font-size: var(--fs-12);
  color: var(--color-text-dim);
}

/* 表單 Form */
.field {
  display: grid;
  gap: 6px;
  margin: 0 0 12px;
}
.label {
  font-size: var(--fs-14);
  color: var(--color-text-dim);
}
.input,
.select,
.textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-text);
  border-radius: var(--radius-6);
  padding: 8px 10px;
}
/* Field-level error styling */
:is(.input, .select, .textarea).is-invalid {
  border-color: rgba(239, 68, 68, 0.85) !important; /* red-500 */
  background: linear-gradient(180deg, rgba(239,68,68,0.10), rgba(239,68,68,0.06));
}
:is(.input, .select, .textarea).is-invalid:focus {
  outline: 2px solid rgba(239, 68, 68, 0.85) !important;
  outline-offset: 2px;
}
html[data-theme='light'] :is(.input, .select, .textarea).is-invalid {
  border-color: rgba(239, 68, 68, 0.85) !important;
  background: linear-gradient(180deg, rgba(239,68,68,0.06), rgba(239,68,68,0.03));
}
a { color: var(--color-text); }
.input:focus,
.select:focus,
.textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
/* Strengthen keyboard focus visibility across interactive elements */
:where(a, button, .button, .chip, .submenu-link, .select, .input, [role='menuitem']):focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.textarea {
  min-height: 120px;
  resize: vertical;
}

/* 卡片 Card */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-10);
  box-shadow: var(--shadow-1);
  padding: 20px;
}
.card:not(.card-tool) {
  /* Links inside hero/info cards should follow text color, not accent */
  --link-color: var(--color-text);
  --link-color-hover: var(--color-text);
}

/* Card text contrast */
.card > strong,
.card h3,
.card .card-title { color: #eaf2ff; }
.card .hero-sub,
.card p { color: var(--color-text-dim); }

/* Tabs */
.tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.tab {
  padding: 8px 10px;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  color: var(--color-text-dim);
}
.tab[aria-selected='true'] {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
[role='tabpanel'] {
  padding: 12px 0;
}

/* SplitPane */
.split {
  display: grid;
  grid-template-columns: 1fr 4px 1fr;
  gap: 16px;
  align-items: stretch;
}
.split-resizer {
  width: 4px;
  background: rgba(255, 255, 255, 0.08);
  cursor: col-resize;
  user-select: none;
}

/* 單欄專注模式：隱藏右欄與分隔，左欄滿寬 */
.focus-mode .split {
  grid-template-columns: 1fr !important;
}
.focus-mode .split-resizer,
.focus-mode .split > :last-child {
  display: none !important;
}

/* Toast */
.toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  background: #111827;
  padding: 10px 14px;
  border-radius: var(--radius-6);
  box-shadow: var(--shadow-2);
}

/* Dialog */
dialog[open] {
  border: none;
  border-radius: var(--radius-10);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-2);
  padding: 16px;
}
dialog::backdrop {
  background: rgba(0, 0, 0, 0.5);
}

/* ---- IA: Home / Tools ---- */
/* Hero */
.hero {
  display: grid;
  gap: 16px;
  padding: 32px 0 8px;
  text-align: center;
}
.hero-title {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.12;
}
.hero-sub {
  color: var(--color-text-dim);
}

/* Dark theme: boost contrast on headings over aurora background */
html[data-theme='dark'] .hero-title,
html[data-theme='dark'] h1,
html[data-theme='dark'] h2,
html[data-theme='dark'] .card-title {
  color: #f3f4f6;
  text-shadow: 0 1px 2px rgba(0,0,0,0.45);
}
.hero-sub {
  color: var(--color-text-dim);
}
.searchbar {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 720px;
  margin: 0 auto;
}
.searchbar .input {
  font-size: 16px;
  padding: 12px 14px;
  flex: 1;
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.card-tool {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  /* Vibrant static gradients to match site background (no blur) */
  background:
    linear-gradient(160deg, rgba(59,130,246,0.22), rgba(99,102,241,0.20)),
    radial-gradient(90% 120% at 10% -10%, rgba(96,165,250,0.36), transparent 60%),
    radial-gradient(100% 120% at 100% 10%, rgba(167,139,250,0.28), transparent 60%),
    linear-gradient(180deg, rgba(17,24,39,0.82), rgba(17,24,39,0.70)) !important;
  cursor: pointer;
  transition:
    transform 0.15s var(--ease-out),
    border-color 0.2s,
    box-shadow 0.2s var(--ease-out),
    background 0.2s var(--ease-out);
}
.card.card-tool { color: var(--color-text); text-decoration: none; }
.card.card-tool:any-link,
.card.card-tool:link,
.card.card-tool:visited { color: var(--color-text) !important; text-decoration: none !important; }
.card.card-tool:hover,
.card.card-tool:active,
.card.card-tool:focus,
.card.card-tool:focus-visible { color: var(--color-text) !important; text-decoration: none !important; }
.card.card-tool .card-title { color: #eaf2ff; }
.card.card-tool .desc {
  color: var(--color-text-dim) !important;
  /* Prevent overflow for long CJK/Latin mixed phrases or slash-separated tokens */
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.card.card-tool p { color: var(--color-text-dim) !important; }
.card.card-tool {
  /* The card anchor itself should not appear blue */
  --link-color: var(--color-text);
  --link-color-hover: var(--color-text);
}
.card.card-tool:hover,
.card.card-tool:focus-visible {
  text-decoration: none !important;
  color: var(--color-text) !important;
}
.card-tool:hover {
  transform: translateY(-2px);
  border-color: color-mix(in oklab, #60a5fa 70%, white 30%);
  box-shadow: 0 10px 22px rgba(2,6,23,0.35);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04)),
    radial-gradient(120% 120% at 15% 0%, rgba(96,165,250,0.20), transparent 60%),
    radial-gradient(120% 120% at 85% 15%, rgba(139,92,246,0.18), transparent 60%),
    rgba(15,23,42,0.66);
}

/* Ensure vibrant looks in low-perf/no-blur regardless of stylesheet order */
:root[data-no-blur] a.card.card-tool,
:root[data-lowperf] a.card.card-tool {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03)),
    radial-gradient(120% 120% at 15% 0%, rgba(96,165,250,0.16), transparent 60%),
    radial-gradient(120% 120% at 85% 15%, rgba(139,92,246,0.14), transparent 60%),
    rgba(15,23,42,0.62) !important;
  border-color: rgba(148,163,184,0.26) !important;
  color: var(--color-text) !important;
}
:root[data-no-blur] a.card.card-tool .card-title,
:root[data-lowperf] a.card.card-tool .card-title {
  background: linear-gradient(90deg, #60a5fa, #a78bfa 50%, #22d3ee) !important;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent !important;
}
:root[data-no-blur] a.card.card-tool .desc,
:root[data-lowperf] a.card.card-tool .desc { color: var(--color-text-dim) !important; }

/* Hero information card: make sure it looks tinted, not flat */
:root[data-no-blur] .card:not(.card-tool),
:root[data-lowperf] .card:not(.card-tool) {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03)),
    radial-gradient(900px 320px at 0% 0%, rgba(96,165,250,0.10), transparent 60%),
    rgba(15,23,42,0.60) !important;
  border: 1px solid rgba(148,163,184,0.24) !important;
}
.card:not(.card-tool) {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03)),
    radial-gradient(900px 320px at 0% 0%, rgba(96,165,250,0.12), transparent 60%),
    linear-gradient(180deg, rgba(17,24,39,0.84), rgba(17,24,39,0.72)) !important;
  border: 1px solid rgba(148,163,184,0.22) !important;
}
.card:not(.card-tool) > strong { color: #f3f4f6 !important; }
.card:not(.card-tool) .hero-sub { color: var(--color-text-dim) !important; }

/* Dark theme: boost vibrancy explicitly */
html[data-theme='dark'] a.card.card-tool {
  background:
    linear-gradient(160deg, rgba(59,130,246,0.28), rgba(139,92,246,0.24)),
    radial-gradient(80% 120% at 12% -8%, rgba(96,165,250,0.40), transparent 60%),
    radial-gradient(120% 120% at 100% 8%, rgba(167,139,250,0.32), transparent 60%),
    linear-gradient(180deg, rgba(17,24,39,0.86), rgba(17,24,39,0.74)) !important;
  border-color: rgba(148,163,184,0.26) !important;
}
html[data-theme='dark'] a.card.card-tool .card-title {
  background: none !important;
  -webkit-background-clip: initial;
  background-clip: initial;
  -webkit-text-fill-color: initial;
  color: #eaf2ff !important;
}
html[data-theme='dark'] .card:not(.card-tool) {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03)),
    radial-gradient(900px 320px at 0% 0%, rgba(96,165,250,0.16), transparent 60%),
    linear-gradient(180deg, rgba(17,24,39,0.86), rgba(17,24,39,0.74)) !important;
  border: 1px solid rgba(148,163,184,0.24) !important;
}

/* Ghost button: ensure vibrant without blur */
:root[data-no-blur] .button.ghost,
:root[data-lowperf] .button.ghost {
  background:
    linear-gradient(180deg, rgba(15,23,42,0.62), rgba(15,23,42,0.48)),
    linear-gradient(180deg, rgba(96,165,250,0.20), rgba(96,165,250,0.10)) !important;
  color: #ffffff !important;
  border-color: rgba(148,163,184,0.34) !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 6px 16px rgba(0,0,0,0.20) !important;
}

/* Light theme: always apply bright styles (even without performance flags) */
html[data-theme='light'] a.card.card-tool {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.88)),
    radial-gradient(120% 120% at 15% 0%, rgba(96,165,250,0.18), transparent 60%),
    radial-gradient(120% 120% at 85% 15%, rgba(139,92,246,0.12), transparent 60%) !important;
  border-color: rgba(2,6,23,0.06) !important;
  color: var(--color-text) !important;
}
html[data-theme='light'] a.card.card-tool .card-title {
  background: none !important;
  -webkit-background-clip: initial;
  background-clip: initial;
  -webkit-text-fill-color: initial;
  color: var(--color-text) !important;
}
html[data-theme='light'] .card:not(.card-tool) {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.94), rgba(255,255,255,0.90)),
    radial-gradient(900px 320px at 0% 0%, rgba(96,165,250,0.16), transparent 60%),
    radial-gradient(900px 320px at 100% 120%, rgba(167,139,250,0.10), transparent 60%) !important;
  border: 1px solid rgba(2,6,23,0.06) !important;
}
html[data-theme='light'] .card:not(.card-tool) > strong { color: #0f172a !important; }
html[data-theme='light'] .card:not(.card-tool) .hero-sub { color: var(--color-text-dim) !important; }
html[data-theme='light'] .button.ghost,
html[data-theme='light'] a.button.ghost {
  background: linear-gradient(135deg, #7c3aed, #3b82f6) !important;
  border-color: transparent !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.35), 0 8px 18px rgba(59,130,246,0.36) !important;
  color: #ffffff !important;
}
html[data-theme='light'] a.button.ghost:link,
html[data-theme='light'] a.button.ghost:visited,
html[data-theme='light'] a.button.ghost:hover,
html[data-theme='light'] a.button.ghost:active { color: #ffffff !important; text-decoration: none !important; }

/* Light theme: use bright, airy styles like the mockups */
html[data-theme='light'] :root[data-no-blur] a.card.card-tool,
html[data-theme='light'] :root[data-lowperf] a.card.card-tool {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.90), rgba(255,255,255,0.86)),
    radial-gradient(120% 120% at 15% 0%, rgba(96,165,250,0.18), transparent 60%),
    radial-gradient(120% 120% at 85% 15%, rgba(139,92,246,0.14), transparent 60%) !important;
  border-color: rgba(2,6,23,0.06) !important;
  color: var(--color-text) !important;
}
html[data-theme='light'] :root[data-no-blur] a.card.card-tool .card-title,
html[data-theme='light'] :root[data-lowperf] a.card.card-tool .card-title {
  background: none !important;
  -webkit-background-clip: initial;
  background-clip: initial;
  -webkit-text-fill-color: initial;
  color: var(--color-text) !important;
}
html[data-theme='light'] :root[data-no-blur] .card:not(.card-tool),
html[data-theme='light'] :root[data-lowperf] .card:not(.card-tool) {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.88)),
    radial-gradient(900px 320px at 0% 0%, rgba(96,165,250,0.18), transparent 60%),
    radial-gradient(900px 320px at 100% 120%, rgba(167,139,250,0.12), transparent 60%) !important;
  border: 1px solid rgba(2,6,23,0.06) !important;
}
html[data-theme='light'] :root[data-no-blur] .button.ghost,
html[data-theme='light'] :root[data-lowperf] .button.ghost {
  background: linear-gradient(135deg, #7c3aed, #3b82f6) !important;
  border-color: transparent !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.35), 0 8px 18px rgba(59,130,246,0.36) !important;
  color: #ffffff !important;
}
.card-title {
  font-weight: 600;
}

/* Ensure the main Run button is legible in dark theme */
html[data-theme='dark'] #run.btn,
html[data-theme='dark'] button#run.btn,
html[data-theme='dark'] #run.btn .shortcut-hint {
  color: #f3f4f6 !important;
}

/* Tool action buttons (.btn) */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-6);
  border: 1px solid rgba(148, 163, 184, 0.26);
  background: rgba(255, 255, 255, 0.06);
  color: #e5e7eb;
  cursor: pointer;
  transition: transform 0.15s var(--ease-out), background 0.2s var(--ease-out), box-shadow 0.2s;
}
.btn .shortcut-hint {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.10);
  color: #e5e7eb;
  border: 1px solid rgba(255,255,255,0.14);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

/* Primary run button */
#run.btn {
  color: #ffffff !important;
  border-color: rgba(96,165,250,0.36);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--color-accent) 92%, #ffffff 0%) 0%,
    #7c3aed 55%,
    #4f46e5 100%
  );
  box-shadow: 0 8px 18px rgba(59,130,246,0.28), 0 2px 6px rgba(0,0,0,0.18), inset 0 1px 0 rgba(255,255,255,0.16);
}
#run.btn:hover {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--color-accent) 96%, #ffffff 0%) 0%,
    #8b5cf6 50%,
    #6366f1 100%
  );
}

/* Secondary buttons */
#swap.btn, #copy.btn, #reset-opts.btn {
  color: #f9fafb;
  background: linear-gradient(180deg, rgba(255,255,255,0.12), rgba(255,255,255,0.08));
  border-color: rgba(255,255,255,0.22);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 1px 1px rgba(0,0,0,0.16);
}
#swap.btn:hover, #copy.btn:hover, #reset-opts.btn:hover {
  background: linear-gradient(180deg, rgba(96,165,250,0.20), rgba(96,165,250,0.12));
  border-color: var(--color-accent);
  color: #ffffff;
}

/* Light theme adjustments */
html[data-theme='light'] .btn { color: #0f172a; background: #ffffff; border-color: rgba(2,6,23,0.12); }
html[data-theme='light'] .btn .shortcut-hint { background: rgba(2,6,23,0.04); color: #0f172a; border-color: rgba(2,6,23,0.12); }
/* Light theme: keep Run as a vivid gradient for strong contrast */
html[data-theme='light'] #run.btn {
  color: #ffffff !important;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--color-accent) 92%, #ffffff 0%) 0%,
    #7c3aed 55%,
    #4f46e5 100%
  ) !important;
  border-color: rgba(59,130,246,0.28) !important;
  box-shadow: 0 8px 18px rgba(59,130,246,0.22), 0 1px 3px rgba(0,0,0,0.08), inset 0 1px 0 rgba(255,255,255,0.35) !important;
}
/* Light theme: secondary actions with dark text and gentle tint */
html[data-theme='light'] #swap.btn,
html[data-theme='light'] #copy.btn,
html[data-theme='light'] #reset-opts.btn {
  color: #0b1220;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border-color: rgba(2,6,23,0.16);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.70), 0 1px 1px rgba(2,6,23,0.05);
}
html[data-theme='light'] #swap.btn:hover,
html[data-theme='light'] #copy.btn:hover,
html[data-theme='light'] #reset-opts.btn:hover {
  background: linear-gradient(180deg, #eff6ff 0%, #dbeafe 100%);
  border-color: var(--color-accent);
  color: #0b1220;
}

/* Status badge as prominent tag */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.02em;
  border: 1px solid rgba(255,255,255,0.22);
  color: #ffffff;
  background: linear-gradient(135deg, rgba(255,255,255,0.10), rgba(255,255,255,0.06));
}
.status-badge[data-status='running'] {
  background: linear-gradient(135deg, #38bdf8, #3b82f6);
  border-color: rgba(59,130,246,0.45);
}
.status-badge[data-status='done'] {
  background: linear-gradient(135deg, #34d399, #10b981);
  border-color: rgba(16,185,129,0.45);
}
.status-badge[data-status='error'],
.status-badge[data-status='failed'] {
  background: linear-gradient(135deg, #f87171, #ef4444);
  border-color: rgba(239,68,68,0.45);
}
html[data-theme='light'] .status-badge { color: #0f172a; border-color: rgba(2,6,23,0.12); }

/* Strengthen borders for input/output textareas */
#input.textarea, #output.textarea {
  border: 1px solid rgba(148,163,184,0.35) !important;
  background: rgba(255,255,255,0.04);
}
html[data-theme='light'] #input.textarea,
html[data-theme='light'] #output.textarea {
  background: #ffffff;
  border-color: rgba(2,6,23,0.18) !important;
}

/* Usage notes section: ensure readable body text in dark theme */
html[data-theme='dark'] #usage-notes { color: #e5e7eb; }
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-dim);
  font-size: 12px;
  border: 1px solid transparent;
  cursor: pointer;
}
.chips .chip {
  /* Vibrant, clearly-a-tag look */
  color: #ffffff;
  font-weight: 700;
  letter-spacing: 0.01em;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--color-accent) 92%, #ffffff 0%) 0%,
    #7c3aed 55%,
    #4f46e5 100%
  );
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow:
    0 6px 14px rgba(59, 130, 246, 0.28),
    0 1px 3px rgba(0, 0, 0, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
  text-shadow: 0 1px 0 rgba(0,0,0,0.18);
  /* Normalize height and prevent wrap */
  box-sizing: border-box;
  height: 28px;
  min-height: 28px;
  padding: 0 10px;
  line-height: 1;
  white-space: nowrap;
}
.chips .chip::before {
  content: '#';
  font-weight: 800;
  opacity: 0.9;
  filter: drop-shadow(0 1px 0 rgba(0,0,0,0.25));
  line-height: 1;
  display: inline-block;
}
.chips .chip:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--color-accent) 96%, #ffffff 0%) 0%,
    #8b5cf6 50%,
    #6366f1 100%
  );
  box-shadow:
    0 8px 18px rgba(59, 130, 246, 0.38),
    0 2px 6px rgba(0, 0, 0, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.chips .chip:active {
  transform: translateY(0);
  filter: saturate(105%);
}
.chips .chip:focus-visible {
  outline: 2px solid #a78bfa;
  outline-offset: 2px;
}
.chip[aria-pressed='true'] {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-text);
  border-color: rgba(255, 255, 255, 0.18);
}

/* Lang Switch */
.lang-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.lang-switch a {
  color: var(--color-primary);
  text-decoration: none;
}

/* Promise */
.promise {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.promise .card {
  height: 100%;
}

/* Floating Top Navigation */
.floating-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  width: 100%;
  /* Premium glass gradient with subtle depth */
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.92) 0%, rgba(17, 24, 39, 0.84) 100%);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

/* Low-perf mode: remove blur on fixed header and tone down shadows */
:root[data-no-blur] .floating-nav,
:root[data-lowperf] .floating-nav {
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
  background: rgba(17, 24, 39, 0.98) !important;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.20) !important;
}

/* Low-perf: tone down glossy chip shadows */
:root[data-lowperf] .chips .chip {
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.10);
}

/* Fallback for browsers without backdrop-filter support (e.g., some Edge configs) */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .floating-nav {
    background: rgba(17, 24, 39, 0.96);
  }
}

/* Respect users preferring reduced transparency */
@media (prefers-reduced-transparency: reduce) {
  .floating-nav {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background: rgba(17, 24, 39, 0.98);
  }
}
.floating-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Sitewide content container: align sections with floating nav width */
main > section {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.floating-nav .brand {
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
}
.floating-nav-scroll {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  -ms-overflow-style: none; /* IE/Edge */
  scrollbar-width: none; /* Firefox */
}
.floating-nav-scroll::-webkit-scrollbar {
  display: none;
}
.tool-chip {
  white-space: nowrap;
}

/* Floating Nav: Multi-level menu */
.floating-nav .brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.floating-nav .brand-icon {
  width: 18px;
  height: 18px;
  filter: drop-shadow(0 0 0 transparent);
}
.floating-nav .brand-text {
  line-height: 1;
}

.floating-nav-menus {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* Brand mark: align logo and text inline across contexts */
/* This complements the floating-nav specific styles and also applies
   to places like footer or hero where the brand is rendered as
   an inline <small> with `.brand-logo` + `.brand-text`. */
small .brand-logo,
small .brand-text {
  display: inline-block;
  vertical-align: middle;
}
/* Normalize icon size and spacing next to the wordmark */
.brand-logo {
  width: 16px;
  height: 16px;
}
.brand-logo + .brand-text {
  margin-left: 6px;
  line-height: 1;
}

.floating-nav-menus {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.floating-nav .tool-chip { flex: 0 0 auto; }
.floating-nav #cat-menu { flex: 1 1 auto; min-width: 0; }
.floating-nav .menu-item:not(#cat-menu) { flex: 0 0 auto; }
.floating-nav #cat-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
/* Persistent category strip inside the nav */
.floating-nav .cat-strip {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  padding-left: 4px;
  /* Allow inner chips to remain untruncated; scrolling handles overflow */
  overflow-y: hidden;
}
.floating-nav .cat-strip::-webkit-scrollbar { display: none; }
.floating-nav .cat-chip {
  white-space: nowrap;
  background: rgba(255, 255, 255, 0.06);
  color: #e5e7eb;
  border-color: rgba(255, 255, 255, 0.18);
}
.floating-nav .lang-menu { flex: 0 0 auto; }
.floating-nav #cat3-menu { flex: 0 0 auto; }
.floating-nav .lang-menu .select {
  min-width: 120px;
}
.floating-nav .cat-chip[aria-checked='true'] {
  background: linear-gradient(180deg, rgba(96,165,250,0.2) 0%, rgba(96,165,250,0.12) 100%);
  color: #fff;
  border-color: rgba(96,165,250,0.32);
}
.menu-item {
  position: relative;
}
.menu-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
/* Improve legibility of top-level menu labels */
.floating-nav .menu-button {
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.01em;
}
.menu-button .chev {
  transition: transform 0.15s var(--ease-out);
  opacity: 0.8;
}
.menu-item.open .menu-button .chev,
.menu-item:hover .menu-button .chev,
.menu-button[aria-expanded='true'] .chev {
  transform: rotate(180deg);
}

/* Increase contrast of chips used as menu buttons on dark header */
.floating-nav .menu-button.chip {
  color: #f9fafb;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.08) 100%);
  border-color: rgba(255, 255, 255, 0.18);
  font-weight: 700;
  text-shadow: none;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 1px 1px rgba(0, 0, 0, 0.12);
}
.floating-nav .menu-button.chip:hover,
.floating-nav .menu-item.open > .menu-button,
.floating-nav .menu-button[aria-expanded='true'] {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.12) 100%);
  border-color: var(--color-accent);
  color: #ffffff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 0 2px #60a5fa59;
}
.floating-nav .menu-button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.floating-nav .menu-button.chip .chev {
  opacity: 0.95;
}

/* Language menu: visually distinct ghost style */
.floating-nav .menu-item.lang-menu {
  position: relative;
  padding-left: 8px;
}
.floating-nav .menu-item.lang-menu::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: rgba(255, 255, 255, 0.1);
  pointer-events: none;
}
.floating-nav .menu-item.lang-menu .menu-button.chip {
  background: transparent;
  color: #e5e7eb;
  border-color: rgba(255, 255, 255, 0.28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.floating-nav .menu-item.lang-menu .menu-button.chip:hover,
.floating-nav .menu-item.lang-menu.open > .menu-button,
.floating-nav .menu-item.lang-menu .menu-button[aria-expanded='true'] {
  background: linear-gradient(180deg, rgba(96, 165, 250, 0.18) 0%, rgba(96, 165, 250, 0.1) 100%);
  border-color: var(--color-accent);
  color: #ffffff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 0 2px #60a5fa59;
}
.floating-nav .menu-item.lang-menu .globe {
  opacity: 0.95;
  margin-right: 6px;
}

.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  /* Ensure panel fits viewport accounting for fixed nav height */
  max-height: min(60vh, calc(100vh - var(--nav-safe, 56px) - 16px));
  /* Avoid horizontal overflow at medium widths */
  max-width: calc(100vw - 16px);
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.98) 0%, rgba(17, 24, 39, 0.94) 100%);
  border-radius: var(--radius-8);
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  padding: 8px;
  display: none;
}
.submenu[hidden] { display: none !important; }
.submenu:not([hidden]) {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}
.menu-item:last-child .submenu {
  left: auto;
  right: 0;
}

.submenu-link {
  display: block;
  padding: 6px 10px;
  border-radius: var(--radius-6);
  color: #f3f4f6;
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    background 0.18s var(--ease-out),
    border-color 0.18s var(--ease-out);
  font-size: var(--fs-14);
  font-weight: 600;
  letter-spacing: 0.005em;
  line-height: 1.35;
}
.submenu-link:hover {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.08) 100%);
  border-color: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

/* Category menu panel text color: increase readability on dark panel */
#cat-menu-panel .submenu-link,
.floating-nav #cat-menu-panel .submenu-link {
  color: rgba(255,255,255,0.9);
}
#cat-menu-panel .submenu-link:hover,
#cat-menu-panel .submenu-link:focus-visible {
  background: linear-gradient(180deg, rgba(96, 165, 250, 0.28) 0%, rgba(96, 165, 250, 0.16) 100%) !important;
  border-color: var(--color-accent) !important;
  color: #ffffff;
}

/* Premium styling for the main settings menu, tinted by brand colors */
#main-menu-panel {
  /* Fallback solid uses brand primary */
  background-color: var(--color-primary);
  /* Prefer a glass gradient mixed from brand primary */
  background-image:
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--color-primary) 22%, #0b1226) 0%,
      color-mix(in srgb, var(--color-primary) 14%, #0b1226) 100%
    );
  border-color: color-mix(in srgb, var(--color-accent) 30%, transparent);
  box-shadow:
    0 10px 26px rgba(2, 6, 23, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 0 0 1px color-mix(in srgb, var(--color-accent) 26%, transparent);
}
.floating-nav #main-menu-panel .submenu-link,
.floating-nav #main-menu-panel button.submenu-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  color: #ffffff;
  /* Match selected category styling */
  background: linear-gradient(180deg, rgba(96, 165, 250, 0.2) 0%, rgba(96, 165, 250, 0.12) 100%) !important;
  border-color: rgba(96, 165, 250, 0.32) !important;
  border-width: 1px;
  border-style: solid;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 1px 1px rgba(0, 0, 0, 0.12);
}
.floating-nav #main-menu-panel .submenu-link:hover,
.floating-nav #main-menu-panel .submenu-link:focus-visible,
.floating-nav #main-menu-panel button.submenu-link:hover,
.floating-nav #main-menu-panel button.submenu-link:focus-visible {
  background: linear-gradient(180deg, rgba(96, 165, 250, 0.28) 0%, rgba(96, 165, 250, 0.16) 100%) !important;
  border-color: var(--color-accent) !important;
  color: #ffffff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 0 0 2px #60a5fa59;
}
#main-menu-panel .submenu-link .label {
  font-weight: 700;
}
#main-menu-panel .submenu-link > span:first-child {
  font-size: 18px; /* emoji/icon */
  filter: drop-shadow(0 1px 1px rgba(0,0,0,0.35));
}

/* Active states */
.submenu-link.active,
.submenu-link[aria-current='page'] {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.12) 100%);
  border-color: rgba(255, 255, 255, 0.26);
  color: #ffffff;
}
.submenu-link[role='menuitemradio'][aria-checked='true'] {
  background: linear-gradient(180deg, rgba(96, 165, 250, 0.2) 0%, rgba(96, 165, 250, 0.12) 100%);
  border-color: rgba(96, 165, 250, 0.32);
  color: #ffffff;
}
.menu-item.active > .menu-button {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.22) 0%, rgba(255, 255, 255, 0.14) 100%);
  color: #ffffff;
  border-color: var(--color-accent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 0 2px #60a5fa59;
}

/* Two-column submenu layout for categories -> tools */
.submenu.two-col {
  /* Do not force display here; respect [hidden]. Display is handled by rules above */
  grid-template-columns: 220px minmax(260px, 1fr);
  gap: 8px;
  min-width: 520px;
  /* Only inner columns should scroll to avoid double scrollbars */
  overflow: hidden;
}
.submenu.two-col .submenu-col {
  display: grid;
  align-content: start;
  gap: 6px;
  /* Fit within panel minus padding; match overall clamp */
  max-height: calc(min(60vh, calc(100vh - var(--nav-safe, 56px) - 16px)) - 16px);
  overflow: auto;
}

/* Fancy scrollbars for submenu columns and single-column menus (brand tinted) */
.submenu,
.submenu .submenu-col {
  scrollbar-width: thin; /* Firefox */
  scrollbar-color: color-mix(in srgb, var(--color-accent) 70%, transparent) transparent; /* thumb track */
}

.submenu::-webkit-scrollbar,
.submenu .submenu-col::-webkit-scrollbar {
  width: 10px;
}
.submenu::-webkit-scrollbar-track,
.submenu .submenu-col::-webkit-scrollbar-track {
  background: transparent;
}
.submenu::-webkit-scrollbar-thumb,
.submenu .submenu-col::-webkit-scrollbar-thumb {
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-accent) 80%, transparent) 0%,
    color-mix(in srgb, var(--color-primary) 80%, transparent) 100%
  );
  border-radius: 8px;
  border: 2px solid rgba(17,24,39,0.9); /* inset border to match dark panel */
}
.submenu::-webkit-scrollbar-thumb:hover,
.submenu .submenu-col::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-accent) 92%, white 8%) 0%,
    color-mix(in srgb, var(--color-primary) 92%, white 8%) 100%
  );
}
.submenu::-webkit-scrollbar-corner,
.submenu .submenu-col::-webkit-scrollbar-corner { background: transparent; }

@media (max-width: 640px) {
  .floating-nav-inner {
    padding: 8px 12px;
  }
  main > section {
    padding-left: 12px;
    padding-right: 12px;
  }
  /* Let JS decide whether to show chips vs 3-level menu */
  .floating-nav .cat-strip { display: flex; }
  .submenu {
    max-width: 92vw;
  }
  .submenu.two-col {
    grid-template-columns: 1fr;
    min-width: 0;
  }
}

/* Medium breakpoint: collapse into 3-level menu inside main menu */
@media (max-width: 960px) {
  /* Let JS decide whether to show chips vs 3-level menu */
  .floating-nav .cat-strip { display: flex; }
  /* Containers created dynamically inside #main-menu-panel */
  .mm-cats {
    display: block;
    padding: 6px 4px 4px 4px;
    border-left: 2px solid rgba(255,255,255,0.06);
    margin-left: 4px;
  }
  .mm-cats-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 6px;
  }
  .mm-tools {
    display: grid;
    gap: 6px;
  }
}

/* Windows High Contrast / forced-colors: keep author colors vibrant */
@media (forced-colors: active) {
  /* Opt-out of UA color overriding for our key components */
  a.button.ghost,
  .button.ghost,
  a.card.card-tool,
  .card.card-tool,
  .card:not(.card-tool) {
    forced-color-adjust: none;
  }

  /* Ghost button should stay bright gradient with white text */
  .button.ghost,
  a.button.ghost {
    background: linear-gradient(135deg, #7c3aed, #3b82f6) !important;
    color: #ffffff !important;
    border-color: rgba(148,163,184,0.30) !important;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 6px 14px rgba(0,0,0,0.18) !important;
  }
  a.button.ghost:link,
  a.button.ghost:visited,
  a.button.ghost:hover,
  a.button.ghost:active { color: #ffffff !important; text-decoration: none !important; }

  /* Tool cards: maintain tinted glass look and proper text colors */
  a.card.card-tool,
  .card.card-tool {
    background:
      linear-gradient(160deg, rgba(59,130,246,0.28), rgba(139,92,246,0.24)),
      radial-gradient(80% 120% at 12% -8%, rgba(96,165,250,0.40), transparent 60%),
      radial-gradient(120% 120% at 100% 8%, rgba(167,139,250,0.32), transparent 60%),
      linear-gradient(180deg, rgba(17,24,39,0.86), rgba(17,24,39,0.74)) !important;
    border-color: rgba(148,163,184,0.26) !important;
    color: var(--color-text) !important;
    text-decoration: none !important;
  }
  a.card.card-tool:link,
  a.card.card-tool:visited,
  a.card.card-tool:hover,
  a.card.card-tool:active,
  a.card.card-tool:focus,
  a.card.card-tool:focus-visible { color: var(--color-text) !important; text-decoration: none !important; }
  .card.card-tool .card-title { color: #eaf2ff !important; }
  .card.card-tool .desc,
  .card.card-tool p { color: var(--color-text-dim) !important; }

  /* Info cards: subtle tinted background with readable text */
  .card:not(.card-tool) {
    background:
      linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03)),
      radial-gradient(900px 320px at 0% 0%, rgba(96,165,250,0.16), transparent 60%),
      linear-gradient(180deg, rgba(17,24,39,0.86), rgba(17,24,39,0.74)) !important;
    border: 1px solid rgba(148,163,184,0.24) !important;
  }
  .card:not(.card-tool) > strong { color: #f3f4f6 !important; }
  .card:not(.card-tool) .hero-sub,
  .card:not(.card-tool) p { color: var(--color-text-dim) !important; }
}