:root {
  color-scheme: light;
  --font-display: "Outfit", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Plus Jakarta Sans", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --ink: #142029;
  --ink-soft: #4a5a68;
  --ink-faint: #7d8c99;

  --teal: #14b8c8;
  --teal-deep: #0e94a4;
  --orange: #f7951d;
  --orange-deep: #e07c08;

  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-bg-strong: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.75);
  --glass-stroke: rgba(20, 60, 80, 0.08);
  --field-bg: rgba(255, 255, 255, 0.6);

  --radius-pill: 999px;
  --radius-lg: 22px;
  --radius-md: 14px;

  --shadow-glass: 0 18px 50px -18px rgba(15, 50, 70, 0.35), 0 2px 8px rgba(15, 50, 70, 0.06);
  --shadow-soft: 0 8px 24px -12px rgba(15, 50, 70, 0.4);

  font-family: var(--font-body);
  color: var(--ink);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background: #e8f1f3;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button, input, select, textarea { font: inherit; }

/* ---------- Atmospheric background ---------- */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    linear-gradient(180deg, #f7fafb 0%, #f1f5f7 100%);
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.12;
  will-change: transform;
}

.blob-teal {
  width: 44vw;
  height: 44vw;
  top: -16vw;
  left: -12vw;
  background: radial-gradient(circle at 30% 30%, var(--teal), transparent 70%);
  animation: drift 28s ease-in-out infinite;
}

.blob-orange {
  width: 34vw;
  height: 34vw;
  bottom: -18vw;
  right: -10vw;
  background: radial-gradient(circle at 60% 40%, var(--orange), transparent 70%);
  opacity: 0.07;
  animation: drift 32s ease-in-out infinite reverse;
}

.blob-ink {
  width: 28vw;
  height: 28vw;
  top: 40%;
  left: 54%;
  background: radial-gradient(circle at 50% 50%, #2b6275, transparent 70%);
  opacity: 0.05;
  animation: drift 36s ease-in-out infinite;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(4vw, 3vw) scale(1.08); }
  66% { transform: translate(-3vw, 1vw) scale(0.96); }
}

@media (prefers-reduced-motion: reduce) {
  .blob, .brand-logo { animation: none !important; }
}

/* ---------- Glass surface ---------- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

/* ---------- Layout ---------- */
.app-shell {
  display: grid;
  grid-template-columns: minmax(320px, 400px) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  max-width: 1500px;
  margin: 0 auto;
  padding: 26px;
  min-height: 100vh;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  border-radius: var(--radius-lg);
  position: sticky;
  top: 26px;
  max-height: calc(100vh - 52px);
  overflow-y: auto;
}

/* ---------- Brand ---------- */
.brand { display: flex; flex-direction: column; gap: 14px; }

.brand-mark { display: flex; align-items: center; gap: 14px; }

.brand-logo {
  width: 52px;
  height: 52px;
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.7);
  padding: 5px;
  box-shadow: var(--shadow-soft);
  will-change: transform;
}

.brand-titles { display: flex; flex-direction: column; gap: 2px; }

.brand h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--ink) 0%, var(--teal-deep) 60%, var(--teal) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-kicker {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--orange-deep);
}

.brand-desc {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13.5px;
  line-height: 1.55;
}

/* ---------- Fields ---------- */
.field { display: grid; gap: 7px; }

.field span,
.check-row span {
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding-left: 4px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius-pill);
  padding: 11px 16px;
  color: var(--ink);
  background: var(--field-bg);
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.field input::placeholder,
.field textarea::placeholder { color: var(--ink-faint); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--teal);
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 0 0 4px rgba(20, 184, 200, 0.15);
}

.field textarea {
  resize: vertical;
  min-height: 180px;
  line-height: 1.5;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 12.5px;
}

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%234a5a68' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 38px;
  cursor: pointer;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.check-row { display: flex; align-items: center; gap: 8px; }
.check-row input { width: 16px; height: 16px; accent-color: var(--teal-deep); }

/* ---------- Buttons ---------- */
.actions { display: flex; flex-direction: column; gap: 9px; margin-top: 4px; }
.actions-row { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.actions-row button { width: 100%; }

button {
  min-height: 44px;
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius-pill);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.6);
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 200ms ease, filter 160ms ease, background 160ms ease;
}

button:hover { box-shadow: var(--shadow-soft); }
button:active { transform: translateY(1px); }

button.primary {
  border: 0;
  color: #fff;
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-deep) 100%);
  box-shadow: 0 10px 22px -10px rgba(14, 148, 164, 0.8);
}

button.primary:hover { filter: brightness(1.05); box-shadow: 0 14px 28px -10px rgba(14, 148, 164, 0.9); }

button.primary.accent {
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%);
  box-shadow: 0 10px 22px -10px rgba(224, 124, 8, 0.8);
}

button.primary.accent:hover { box-shadow: 0 14px 28px -10px rgba(224, 124, 8, 0.9); }

button.ghost {
  background: rgba(255, 255, 255, 0.45);
  font-weight: 600;
}

button:disabled { cursor: default; opacity: 0.5; box-shadow: none; transform: none; }

.download-link {
  align-self: flex-start;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  background: rgba(247, 149, 29, 0.12);
  color: var(--orange-deep);
  font-weight: 700;
  font-size: 13px;
  text-decoration: none;
  transition: background 160ms ease;
}

.download-link:hover { background: rgba(247, 149, 29, 0.2); }

/* ---------- Workspace ---------- */
.workspace {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 26px;
  border-radius: var(--radius-lg);
  min-width: 0;
  height: calc(100vh - 52px);
  overflow: hidden;
}

.token-document {
  flex: 1;
  min-height: 0;
}

.ft-token-document {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: var(--ink);
}

.ft-token-toolbar {
  flex: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0 0 16px;
}

.ft-toolbar-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  min-height: 34px;
}

.ft-toolbar-row[hidden] { display: none; }

.ft-tabs-host { display: inline-flex; }

.ft-legend-host,
.ft-cutoff-host {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
}

.ft-phase {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, rgba(20, 184, 200, 0.16), rgba(20, 184, 200, 0.06));
  border: 1px solid rgba(20, 184, 200, 0.25);
  color: var(--teal-deep);
  font-family: var(--font-display);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ft-tabs {
  display: inline-flex;
  gap: 4px;
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius-pill);
  padding: 4px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(8px);
}

.ft-tab {
  min-height: 30px;
  border: 0;
  border-radius: var(--radius-pill);
  padding: 5px 14px;
  color: var(--ink-soft);
  background: transparent;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
}

.ft-tab:hover { box-shadow: none; color: var(--ink); }

.ft-tab.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-deep) 100%);
  box-shadow: 0 6px 14px -6px rgba(14, 148, 164, 0.8);
}

.ft-token-stream {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius-md);
  padding: 18px;
  background: rgba(255, 255, 255, 0.5);
  line-height: 2.1;
  font-family: var(--font-mono);
  font-size: 13px;
  overflow-wrap: anywhere;
}

.ft-legend {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 6px 13px;
  background: var(--glass-bg-strong);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-soft);
  font-family: var(--font-body);
  font-size: 11px;
  color: var(--ink-soft);
}

.ft-legend-item { display: flex; align-items: center; gap: 7px; }
.ft-legend-label { white-space: nowrap; }

.ft-legend-swatch {
  flex: none;
  width: 32px;
  height: 13px;
  border-radius: 5px;
}

.ft-legend-swatch-input { background: linear-gradient(to right, rgba(255, 246, 226, 0.9), rgba(255, 141, 56, 0.95)); }
.ft-legend-swatch-output { background: linear-gradient(to right, rgba(226, 240, 255, 0.9), rgba(68, 154, 255, 0.95)); }

.ft-legend-swatch-target {
  width: auto;
  height: auto;
  padding: 0 2px;
  font-family: var(--font-mono);
  color: var(--ink);
  text-decoration: underline wavy var(--teal-deep);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  text-decoration-skip-ink: none;
}

.ft-token {
  display: inline;
  margin: 0 1px;
  border-radius: 5px;
  padding: 2px 3px;
  white-space: pre-wrap;
  background: rgba(20, 60, 80, 0.06);
  transition: background 120ms ease, outline-color 120ms ease;
}

.ft-token.region-prompt { color: var(--ink); }
.ft-token.region-generation { color: #0d4257; }
.ft-token.kind-whitespace { color: var(--ink-faint); }

.ft-token.kind-special,
.ft-token.kind-template,
.ft-token.kind-control {
  color: var(--orange-deep);
  background: rgba(247, 149, 29, 0.16);
}

.ft-token.is-selectable { cursor: pointer; }

.ft-token.is-selectable:hover {
  outline: 1px solid var(--teal);
  background: rgba(20, 184, 200, 0.14);
}

.ft-token.is-target {
  text-decoration: underline wavy var(--teal-deep);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  text-decoration-skip-ink: none;
}

.ft-view { display: none; min-height: 0; }
.ft-view.is-active {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

/* ---------- Hover weight tooltip ---------- */
.ft-tooltip {
  position: fixed;
  z-index: 100;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 7px 11px;
  border-radius: 10px;
  background: rgba(20, 32, 41, 0.93);
  color: #fff;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(6px);
}

.ft-tooltip[hidden] { display: none; }

.ft-tooltip-score {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.ft-tooltip-meta {
  font-size: 10.5px;
  color: rgba(255, 255, 255, 0.7);
}

/* ---------- Cut-off slider with distribution ---------- */
.ft-target-preview {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  max-width: 62%;
  padding: 6px 13px;
  border-radius: var(--radius-pill);
  background: rgba(37, 99, 235, 0.07);
  border: 1px solid rgba(37, 99, 235, 0.18);
  font-size: 12px;
  color: var(--ink-soft);
}

.ft-target-preview[hidden] { display: none; }

.ft-target-label {
  flex: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #2563eb;
}

.ft-target-text {
  min-width: 0;
  font-family: var(--font-mono);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-decoration: underline wavy #2563eb;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  text-decoration-skip-ink: none;
}

.ft-cutoff {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 11px;
  color: var(--ink-soft);
}

.ft-scale {
  display: inline-flex;
  gap: 3px;
  padding: 3px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--glass-stroke);
}

.ft-scale-btn {
  min-height: 24px;
  padding: 3px 11px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
}

.ft-scale-btn:hover { box-shadow: none; color: var(--ink); }

.ft-scale-btn.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-deep) 100%);
  box-shadow: 0 5px 12px -6px rgba(14, 148, 164, 0.8);
}

.ft-cutoff[hidden] { display: none; }

.ft-cutoff-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.ft-cutoff-track {
  position: relative;
  width: 190px;
  height: 40px;
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--glass-stroke);
  overflow: hidden;
}

.ft-cutoff-hist {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.ft-cutoff-fill {
  position: absolute;
  top: 0;
  bottom: 0;
  background: rgba(20, 184, 200, 0.12);
  border-left: 1.5px solid var(--teal-deep);
  border-right: 1.5px solid var(--teal-deep);
  pointer-events: none;
}

.ft-cutoff-track input[type="range"] {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  pointer-events: none;
}

.ft-cutoff-track input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  pointer-events: auto;
  width: 11px;
  height: 40px;
  border-radius: 4px;
  background: var(--teal-deep);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.32);
  cursor: ew-resize;
}

.ft-cutoff-track input[type="range"]::-moz-range-thumb {
  pointer-events: auto;
  width: 11px;
  height: 40px;
  border-radius: 4px;
  background: var(--teal-deep);
  border: 2px solid #fff;
  cursor: ew-resize;
}

.ft-cutoff-track input[type="range"]::-moz-range-track { background: transparent; }

.ft-cutoff-readout {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  min-width: 58px;
}

.status-line {
  margin: 0;
  min-height: 22px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--glass-stroke);
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 500;
}

@media (max-width: 880px) {
  .app-shell { grid-template-columns: 1fr; }
  .controls { position: static; max-height: none; }
  .workspace { height: auto; min-height: 420px; overflow: visible; }
}

/* ---------- Inline save form ---------- */
.gallery-save-form {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 14px;
  border: 1px solid rgba(20, 184, 200, 0.25);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(20, 184, 200, 0.08), rgba(255, 255, 255, 0.4));
}

.gallery-save-form[hidden] { display: none; }

.gallery-save-form input {
  padding: 10px 16px;
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius-pill);
  background: var(--field-bg);
  font: inherit;
}

.gallery-save-form input:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 4px rgba(20, 184, 200, 0.15);
}

.gallery-save-actions { display: flex; gap: 9px; }
.gallery-save-actions button { flex: 1; }

[data-reveal] { opacity: 1; }

/* ---------- Show-code modal ---------- */
.code-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.code-modal[hidden] { display: none; }

.code-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13, 30, 40, 0.45);
  backdrop-filter: blur(3px);
}

.code-dialog {
  position: relative;
  width: min(780px, 100%);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  padding: 20px;
  border-radius: var(--radius-lg);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.code-title { display: flex; align-items: baseline; gap: 11px; }

.code-header h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
}

.code-lang {
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(20, 184, 200, 0.12);
  border: 1px solid rgba(20, 184, 200, 0.28);
  color: var(--teal-deep);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
}

.code-close {
  min-height: 34px;
  width: 34px;
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.5);
  font-size: 1.3rem;
  line-height: 1;
  color: var(--ink-soft);
  cursor: pointer;
}

.code-block {
  margin: 0;
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: #0d1620;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 14px 36px -20px rgba(0, 0, 0, 0.7);
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: #c8d3de;
  white-space: pre;
  -webkit-font-smoothing: auto;
}

/* Slim dark scrollbar for the code block */
.code-block::-webkit-scrollbar { width: 10px; height: 10px; }
.code-block::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  border: 2px solid #0d1620;
}

.code-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}

.code-hint { font-size: 12px; color: var(--ink-faint); }

/* ---------- Python syntax highlight (highlight.js tokens) ---------- */
.hljs-comment, .hljs-quote { color: #5c6b78; font-style: italic; }
.hljs-keyword, .hljs-literal, .hljs-type { color: #c792ea; }
.hljs-string, .hljs-meta-string { color: #9bd17b; }
.hljs-number, .hljs-symbol { color: #f5a25d; }
.hljs-built_in, .hljs-class .hljs-title { color: #ffcb6b; }
.hljs-title, .hljs-title.function_, .hljs-section { color: #6cb6ff; }
.hljs-params { color: #c8d3de; }
.hljs-attr, .hljs-attribute { color: #6cb6ff; }
.hljs-meta { color: #5c6b78; }
.hljs-comment .hljs-doctag { color: #7f8c99; }