:root {
  --bg: #f5f3ef;
  --surface: #ffffff;
  --surface-soft: #fbfaf7;
  --border: #ddd9d0;
  --text: #1a1a1a;
  --muted: #6b6660;
  --accent: #2e5c8a;
  --accent-soft: #e8f0f9;
  --accent-strong: #244d75;
  --error: #b94a3a;
  --ok: #2e7d52;
  --shadow: 0 2px 16px rgba(0,0,0,.07);
  --radius: 10px;
  --radius-sm: 6px;
  --font-serif: 'Playfair Display', 'Newsreader', Georgia, serif;
  --font-sans: 'Mulish', 'DM Sans', Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
}

a { color: var(--accent); }
button, input, select, textarea { font: inherit; }
img { max-width: 100%; display: block; }

.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 32px 16px 72px;
}

.page.narrow {
  max-width: 720px;
}

.progress-wrap {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 4px;
  background: var(--border);
  margin: -32px -16px 28px;
}

.progress-bar {
  height: 100%;
  background: var(--accent);
  width: 0;
  transition: width .25s ease;
}

.header {
  text-align: center;
  margin-bottom: 28px;
}

.header .eyebrow {
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.header h1 {
  font-family: var(--font-serif);
  font-size: clamp(24px, 4vw, 34px);
  color: var(--accent);
  line-height: 1.2;
  margin: 0 0 8px;
}

.header .sub {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 30px;
  margin-bottom: 22px;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--accent);
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .05em;
}

.note {
  font-size: 13px;
  color: var(--muted);
  background: var(--surface-soft);
  border-left: 3px solid var(--border);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  margin: 0 0 18px;
}

.field {
  margin-bottom: 22px;
}

.field:last-child {
  margin-bottom: 0;
}

.lbl,
fieldset legend {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}

.req {
  color: var(--error);
}

.hint {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

input[type="text"],
input[type="number"],
textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(46,92,138,.1);
}

.opts {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.opt {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  transition: border-color .18s, background .18s;
}

.opt:hover,
.opt.sel {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.opt input {
  margin-top: 2px;
  accent-color: var(--accent);
}

.opt-other-input {
  display: none;
  margin-top: 8px;
}

.field.bad .ferr {
  display: block;
}

.field.bad .opts,
.field.bad .likert-grid,
.field.bad .consent-wrap {
  outline: 2px solid var(--error);
  border-radius: 10px;
}

.field.bad input[type="text"],
.field.bad input[type="number"] {
  border-color: var(--error);
}

.ferr {
  display: none;
  font-size: 12px;
  color: var(--error);
  font-weight: 600;
  margin-top: 6px;
}

.cond {
  display: none;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--border);
}

.cond.vis {
  display: block;
}

.consent-body {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
  padding: 18px 20px;
  font-size: 14px;
  margin-bottom: 18px;
}

.consent-body p {
  margin: 0 0 10px;
}

.consent-body p:last-child {
  margin-bottom: 0;
}

.consent-wrap {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color .2s, background .2s;
}

.consent-wrap.checked {
  border-color: var(--ok);
  background: #f0faf4;
}

.btn-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  border: none;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background .2s, transform .08s;
}

.btn:hover {
  background: var(--accent-strong);
}

.btn:active {
  transform: scale(.99);
}

.btn:disabled {
  background: var(--border);
  color: #666;
  cursor: not-allowed;
}

.btn.secondary {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}

.screen {
  display: none;
  text-align: center;
  padding: 44px 16px;
}

.screen.vis {
  display: block;
}

.screen .ico {
  font-size: 48px;
  margin-bottom: 14px;
}

.screen h2 {
  font-family: var(--font-serif);
  color: var(--accent);
  margin: 0 0 10px;
}

.likert-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

.likert-item:first-child {
  padding-top: 0;
}

.likert-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.likert-head {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 12px;
}

.likert-grid {
  display: grid;
  grid-template-columns: minmax(120px,1fr) repeat(7,minmax(40px,56px)) minmax(120px,1fr);
  gap: 8px;
  align-items: center;
  background: var(--surface-soft);
  padding: 12px;
  border-radius: 10px;
}

.likert-grid .scale-label {
  font-size: 12px;
  color: var(--muted);
}

.likert-grid .cell {
  text-align: center;
}

.likert-grid input[type="radio"] {
  transform: scale(1.1);
  accent-color: var(--accent);
}

.test-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

.test-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.test-intro {
  max-width: 820px;
  margin: 0 auto;
  padding: 28px;
}

.test-intro h1,
.test-intro h2 {
  font-family: var(--font-serif);
  color: var(--accent);
  margin-top: 0;
}

.hidden {
  display: none !important;
}

.mr-fullscreen {
  min-height: 100vh;
  background: #000;
  color: #fff;
  padding: 0;
}

.mr-screen {
  display: flex;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  padding: 36px 20px;
  text-align: center;
}

.mr-panel {
  width: min(820px, 100%);
}

.mr-panel h1,
.mr-panel h2 {
  font-family: var(--font-serif);
  margin-top: 0;
  color: #fff;
}

.mr-instructions {
  text-align: left;
  background: #0e0e0e;
  border: 1px solid #222;
  padding: 24px;
  border-radius: 12px;
}

.mr-instructions ul {
  padding-left: 20px;
}

.mr-trial-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 12px 20px;
  background: rgba(0,0,0,.92);
  z-index: 20;
}

.mr-bar-track {
  height: 6px;
  background: #222;
  border-radius: 999px;
  overflow: hidden;
}

.mr-bar-fill {
  height: 100%;
  background: #fff;
  width: 0;
  transition: width .25s ease;
}

.mr-trial-content {
  min-height: 100vh;
  padding: 80px 20px 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.mr-fixation {
  font-size: 58px;
  font-family: monospace;
}

.mr-stim-img {
  max-width: 92vw;
  max-height: 60vh;
  margin-bottom: 24px;
}

.mr-response-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.mr-response-buttons button {
  min-width: 220px;
  padding: 14px 26px;
  background: #141414;
  border: 2px solid #444;
  color: #fff;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
}

.mr-response-buttons button:hover {
  border-color: #fff;
  background: #222;
}

.mr-timebar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 20px;
  background: rgba(0,0,0,.92);
  z-index: 20;
}

.sot-stage {
  max-width: 1320px;
  margin: 0 auto;
  padding: 18px 20px 40px;
}

.sot-topbar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
  margin-bottom: 16px;
}

.sot-topbar h1 {
  font-family: var(--font-serif);
  font-size: 20px;
  margin: 0;
}

.sot-meta {
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}

.sot-frame {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 22px 30px 24px;
  box-shadow: var(--shadow);
}

.sot-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.sot-instruction {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 20px;
  background: var(--surface-soft);
  padding: 14px 20px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.sot-body {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 20px;
  align-items: center;
}

.sot-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.sot-col-label {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.sot-canvas {
  display: block;
  touch-action: none;
  cursor: crosshair;
}

.compass-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.compass-map {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  padding: 18px;
  border-radius: 10px;
  font-size: 18px;
}

.compass-prompt {
  font-size: 22px;
  line-height: 1.5;
  text-align: center;
  margin-bottom: 24px;
}

.compass-circle {
  position: relative;
  width: 260px;
  height: 260px;
  border: 2px solid var(--border);
  border-radius: 50%;
  margin: 0 auto 24px;
  background: #fff;
}

.compass-pointer-svg {
  width: 260px;
  height: 260px;
  display: block;
}

.range-row {
  max-width: 560px;
  margin: 0 auto;
}

.range-row input[type="range"] {
  width: 100%;
}

.angle-readout {
  text-align: center;
  font-weight: 700;
  margin-top: 10px;
}

@media (max-width: 760px) {
  .card {
    padding: 22px 18px;
  }

  .likert-grid {
    grid-template-columns: 1fr repeat(7,34px) 1fr;
    font-size: 12px;
  }

  .btn-row {
    flex-direction: column;
  }

  .sot-body {
    grid-template-columns: 1fr;
  }

  .sot-frame {
    padding: 18px;
  }

  .compass-prompt {
    font-size: 18px;
  }

  .mr-response-buttons button {
    min-width: 160px;
  }
}