/* FocusField — atmospheric study demo, not dashboard slop */

:root {
  --bg-deep: #0a1218;
  --bg-mid: #122028;
  --text: #e8eef2;
  --text-muted: #8aa3b0;
  --task: #f0b429;
  --task-glow: rgba(240, 180, 41, 0.45);
  --you: #5eead4;
  --distract: #f07178;
  --distract-soft: rgba(240, 113, 120, 0.35);
  --risk: #ff6b4a;
  --ok: #6bcb77;
  --panel: rgba(10, 18, 24, 0.72);
  --border: rgba(255, 255, 255, 0.08);
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "Newsreader", Georgia, serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg-deep);
  overflow-x: hidden;
}

.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(94, 234, 212, 0.08), transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 20%, rgba(240, 180, 41, 0.07), transparent 50%),
    radial-gradient(ellipse 100% 80% at 50% 100%, rgba(18, 32, 40, 0.9), var(--bg-deep));
  z-index: 0;
}

/* Hero — signal, not card stack */
.hero {
  position: relative;
  z-index: 2;
  padding: 1.25rem 1.5rem 0.5rem;
  max-width: 42rem;
}

.hero-kicker {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--you);
}

.hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--text) 30%, var(--task) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-tagline {
  margin: 0.5rem 0 0;
  font-size: 1.05rem;
  font-style: italic;
  color: var(--text-muted);
  max-width: 28rem;
}

/* Full-bleed canvas stage */
.stage {
  position: relative;
  z-index: 1;
  width: 100%;
  height: min(52vh, 420px);
  min-height: 260px;
}

#field {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
}

.readout {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: min(220px, 42vw);
  padding: 0.85rem 1rem;
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 2px;
  font-size: 0.82rem;
}

.readout-row {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
}

.readout-row:last-child {
  border-bottom: none;
}

.readout-label {
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.readout-row strong {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.78rem;
  text-align: right;
}

.readout-risk strong {
  color: var(--ok);
}

.readout-risk.is-risk strong {
  color: var(--risk);
}

/* Controls — flat, typographic */
.controls {
  position: relative;
  z-index: 2;
  padding: 1rem 1.5rem 2rem;
  max-width: 960px;
}

.presets {
  margin-bottom: 1.25rem;
}

.presets-label {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.preset-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.preset-btn {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.preset-btn:hover,
.preset-btn:focus-visible {
  border-color: var(--you);
  outline: none;
}

.preset-btn.active {
  background: rgba(94, 234, 212, 0.12);
  border-color: var(--you);
  color: var(--you);
}

.control-grid {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

@media (min-width: 640px) {
  .control-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.control {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-head {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.control-head input[type="text"] {
  font-family: var(--font-body);
  font-size: 1rem;
  font-style: italic;
  padding: 0.4rem 0;
  border: none;
  border-bottom: 1px solid var(--border);
  background: transparent;
  color: var(--task);
}

.control-head input[type="text"]:focus {
  outline: none;
  border-bottom-color: var(--task);
}

.slider-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.slider-row output {
  min-width: 2.5rem;
  text-align: right;
  color: var(--text);
  font-weight: 600;
}

input[type="range"] {
  width: 100%;
  height: 4px;
  appearance: none;
  background: var(--border);
  border-radius: 2px;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--you);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: none;
  border-radius: 50%;
  background: var(--you);
  cursor: pointer;
}

.control-hint {
  font-size: 0.75rem;
  font-style: italic;
  color: var(--text-muted);
}

/* Distractor cards — compact rows */
.distractors {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.distractor-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  padding: 0.65rem 0;
  border-top: 1px solid var(--border);
}

@media (min-width: 720px) {
  .distractor-row {
    grid-template-columns: 6rem 1fr 1fr auto;
    align-items: center;
  }
}

.distractor-name {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--distract);
}

.distractor-row .slider-row span:first-child {
  min-width: 1.5rem;
}

.distractor-distance {
  font-family: var(--font-display);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: right;
}

.distractor-toggle {
  justify-self: end;
  font-family: var(--font-display);
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}

.distractor-row.is-off {
  opacity: 0.45;
}

.formula-note {
  margin: 1.25rem 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

.footer {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0 1.5rem 1.5rem;
  font-family: var(--font-display);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.footer a {
  color: var(--you);
  text-decoration: none;
}

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