/*
 * lab.css — The Lab (/lab). Builds on style.css (nav, btn, footer, fonts, tokens).
 * Only Lab-specific layout/components live here.
 */

.lab {
  max-width: 920px;
  margin: 0 auto;
  padding: calc(64px + var(--s-16)) clamp(20px, 5vw, 40px) var(--s-24);
}

/* ── Hero ─────────────────────────────────────────────────────────── */
.lab-hero { text-align: center; margin-bottom: var(--s-16); }
.lab-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: var(--fs-button); font-weight: 600; letter-spacing: var(--track-display);
  text-transform: uppercase; color: var(--gold); margin: 0 0 var(--s-5);
}
.lab-title {
  font-family: var(--font-display); font-weight: 700;
  /* Between section-title (--fs-title, 40–64) and the home hero (--fs-display, 72–120):
     a real hero without dominating a 3-word heading. */
  font-size: clamp(42px, 6vw, 76px); line-height: 1.0; word-spacing: 0.12em;
  margin: 0 0 var(--s-5); color: var(--off);
}
.lab-sub {
  max-width: 52ch; margin: 0 auto var(--s-6);
  color: var(--dim); font-size: var(--fs-heading); line-height: 1.7;
}
.lab-preview-banner {
  display: inline-block; max-width: 60ch;
  background: var(--gold-faint); border: 1px solid var(--gold-dim);
  border-radius: var(--r-lg); padding: var(--s-3) var(--s-5);
  color: var(--off-70); font-size: var(--fs-body-sm); line-height: 1.5;
}
.lab-preview-banner strong { color: var(--gold); }

/* ── Experiment card ──────────────────────────────────────────────── */
.lab-exp {
  background: var(--bg2); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: clamp(20px, 4vw, 40px);
}
.lab-exp-head { margin-bottom: var(--s-10); }
.lab-exp-status {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: var(--fs-meta);
  letter-spacing: var(--track-default); text-transform: uppercase;
  color: var(--teal); margin-bottom: var(--s-3);
}
.lab-exp-status::before {
  content: ''; width: 7px; height: 7px; border-radius: var(--r-circle);
  background: var(--teal); box-shadow: 0 0 0 0 var(--teal-dim);
  animation: lab-pulse 2s var(--ease) infinite;
}
@keyframes lab-pulse {
  0%   { box-shadow: 0 0 0 0 var(--teal-dim); }
  70%  { box-shadow: 0 0 0 7px rgba(61,170,181,0); }
  100% { box-shadow: 0 0 0 0 rgba(61,170,181,0); }
}
.lab-exp-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: var(--fs-section); line-height: 1.05; word-spacing: 0.12em;
  margin: 0 0 var(--s-3); color: var(--off);
}
.lab-exp-desc { max-width: 60ch; color: var(--dim); line-height: 1.6; margin: 0; }
.lab-exp-desc strong { color: var(--off-70); }

/* ── Steps ────────────────────────────────────────────────────────── */
.lab-step {
  display: grid; grid-template-columns: 40px 1fr; gap: var(--s-5);
  padding: var(--s-6) 0; border-top: 1px solid var(--line);
  transition: opacity var(--t-base) var(--ease);
}
.lab-step:first-of-type { border-top: none; }
.lab-step.is-locked { opacity: 0.4; pointer-events: none; }
.lab-step-num {
  width: 40px; height: 40px; border-radius: var(--r-circle);
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: var(--fs-body-sm); font-weight: 500;
  color: var(--gold); background: var(--gold-faint);
  border: 1px solid var(--gold-dim);
}
.lab-step.is-done .lab-step-num {
  background: var(--gold); border-color: var(--gold);
  color: transparent;        /* hide the number; the ✓ overlays the whole circle */
  position: relative;
}
.lab-step.is-done .lab-step-num::after {
  content: '✓';
  position: absolute; inset: 0;
  display: grid; place-items: center;
  color: var(--bg); font-size: var(--fs-body); font-weight: 700; line-height: 1;
}
.lab-step-title {
  font-family: var(--font-display); font-weight: 600; font-size: var(--fs-h3);
  margin: 0 0 var(--s-2); color: var(--off);
}
.lab-step-hint { color: var(--dim); font-size: var(--fs-body-sm); line-height: 1.5; margin: 0 0 var(--s-4); }
.lab-connect-btn { margin-top: var(--s-1); }

/* ── Mask grid (selectable) ───────────────────────────────────────── */
.lab-mask-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: var(--s-3); margin-top: var(--s-2);
}
.lab-mask-card {
  appearance: none; padding: 0; cursor: pointer; text-align: left;
  background: var(--bg3); border: 2px solid transparent;
  border-radius: var(--r-md); overflow: hidden;
  transition: border-color var(--t-fast), transform var(--t-fast);
}
.lab-mask-card:hover { transform: translateY(-2px); border-color: var(--gold-dim); }
.lab-mask-card.is-selected { border-color: var(--gold); }
.lab-mask-card img { display: block; width: 100%; aspect-ratio: 3 / 4; object-fit: cover; background: var(--bg); }
.lab-mask-name {
  padding: var(--s-2); font-size: var(--fs-meta); color: var(--off-70);
  font-family: var(--font-mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.lab-mask-card.is-selected .lab-mask-name { color: var(--gold); }

/* ── Country grid ─────────────────────────────────────────────────── */
.lab-country-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--s-2); margin-top: var(--s-2);
}
.lab-country {
  display: flex; align-items: center; gap: var(--s-3);
  padding: var(--s-3) var(--s-4); cursor: pointer; text-align: left;
  background: var(--bg3); border: 1px solid var(--line); border-radius: var(--r-md);
  color: var(--off-70); font-family: var(--font-ui); font-size: var(--fs-body-sm);
  transition: border-color var(--t-fast), background var(--t-fast), color var(--t-fast);
}
.lab-country:hover { border-color: var(--gold-dim); color: var(--off); }
.lab-country.is-selected { border-color: var(--gold); background: var(--gold-faint); color: var(--gold); }
.lab-country-flag { font-size: 20px; line-height: 1; }
.lab-country-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── Testing banner variant ───────────────────────────────────────── */
.lab-preview-banner--test {
  background: rgba(248,113,113,0.10); border-color: rgba(248,113,113,0.45);
}
.lab-preview-banner--test strong { color: var(--danger); }

/* ── Config (step 3) ──────────────────────────────────────────────── */
.lab-config {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s-4); margin: var(--s-2) 0 var(--s-5);
}
.lab-field { display: flex; flex-direction: column; gap: var(--s-2); }
.lab-field[hidden] { display: none; }
/* Prompt fields get their own full-width row (they need the room). */
#labFieldEdit, #labFieldMotion { grid-column: 1 / -1; }
.lab-field-label {
  font-family: var(--font-mono); font-size: var(--fs-meta);
  letter-spacing: var(--track-default); text-transform: uppercase; color: var(--dim);
}
.lab-select, .lab-input, .lab-textarea {
  width: 100%; box-sizing: border-box;
  background: var(--bg3); border: 1px solid var(--line); border-radius: var(--r-md);
  color: var(--off); font-family: var(--font-ui); font-size: var(--fs-body-sm);
  padding: var(--s-3) var(--s-4); transition: border-color var(--t-fast);
}
/* Mouse focus: quiet gold border. Keyboard focus keeps a visible ring — a 1px
   border-color change alone is too weak an indicator (WCAG 2.4.7). */
.lab-select:focus, .lab-input:focus, .lab-textarea:focus { outline: none; border-color: var(--gold); }
.lab-select:focus-visible, .lab-input:focus-visible, .lab-textarea:focus-visible {
  outline: 2px solid var(--teal); outline-offset: 2px;
}
.lab-textarea { resize: vertical; min-height: 150px; font-family: var(--font-ui); line-height: 1.6; }
.lab-continue-btn { margin-top: var(--s-1); }
.lab-config-actions { display: flex; flex-wrap: wrap; gap: var(--s-3); align-items: center; margin-top: var(--s-1); }
/* Team-test "skip payment" — muted/dashed so it reads as a test-only affordance. */
.lab-skip-btn { border-style: dashed; opacity: 0.9; }
.lab-skip-btn[hidden] { display: none; }

/* Team-test "any mask by ID" input. */
.lab-anymask { margin-top: var(--s-5); padding-top: var(--s-4); border-top: 1px dashed var(--line); }
.lab-anymask[hidden] { display: none; }
.lab-anymask-row { display: flex; gap: var(--s-3); margin-top: var(--s-2); flex-wrap: wrap; }
.lab-anymask-row .lab-input { max-width: 200px; }

/* ── Status + result ──────────────────────────────────────────────── */
.lab-test-flag {
  background: rgba(248,113,113,0.10); border: 1px solid rgba(248,113,113,0.45);
  border-radius: var(--r-md); padding: var(--s-3) var(--s-4); margin-bottom: var(--s-5);
  font-size: var(--fs-meta); line-height: 1.5; color: var(--off-70);
}
.lab-test-flag strong { color: var(--danger); }
/* Structured live status: icon (state cue) + text + sub-line. */
.lab-status {
  display: flex; align-items: flex-start; gap: var(--s-3);
  margin-top: var(--s-5); padding-top: var(--s-4); border-top: 1px solid var(--line);
}
.lab-status-icon { flex: 0 0 auto; width: 18px; height: 18px; margin-top: 2px; position: relative; border-radius: var(--r-circle); }
.lab-status-body { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.lab-status-text { font-family: var(--font-mono); font-size: var(--fs-body-sm); color: var(--off); line-height: 1.4; }
.lab-status-sub  { font-size: var(--fs-meta); color: var(--dim); line-height: 1.5; }

/* Waiting for payment — pulsing amber dot (watching). */
.lab-status.is-waiting .lab-status-icon {
  width: 12px; height: 12px; margin: 4px 3px 0; background: var(--gold);
  box-shadow: 0 0 0 0 var(--gold-dim); animation: lab-pulse 2s var(--ease) infinite;
}
/* Generating — rotating spinner ring (active work). */
.lab-status.is-generating .lab-status-icon {
  border: 2px solid var(--line); border-top-color: var(--gold);
  animation: lab-spin 0.7s linear infinite;
}
@keyframes lab-spin { to { transform: rotate(360deg); } }
/* Payment detected / done — filled check. */
.lab-status.is-paid .lab-status-icon { background: var(--teal); }
.lab-status.is-done .lab-status-icon { background: var(--gold); }
.lab-status.is-failed .lab-status-icon { background: var(--danger); }
.lab-status.is-paid .lab-status-icon::after,
.lab-status.is-done .lab-status-icon::after,
.lab-status.is-failed .lab-status-icon::after {
  position: absolute; inset: 0; display: grid; place-items: center;
  color: var(--bg); font-weight: 700; line-height: 1;
}
.lab-status.is-paid .lab-status-icon::after,
.lab-status.is-done .lab-status-icon::after { content: '✓'; font-size: 12px; }
.lab-status.is-failed .lab-status-icon::after { content: '✕'; font-size: 11px; }
.lab-status.is-paid .lab-status-text { color: var(--teal); }
.lab-status.is-done .lab-status-text { color: var(--gold); }
.lab-status.is-failed .lab-status-text { color: var(--danger); }

/* Indeterminate progress bar shown while paid/generating. */
.lab-genbar { height: 3px; margin-top: var(--s-4); border-radius: 2px; background: var(--bg3); overflow: hidden; }
.lab-genbar[hidden] { display: none; }
.lab-genbar span {
  display: block; width: 38%; height: 100%; border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  animation: lab-slide 1.3s var(--ease) infinite;
}
@keyframes lab-slide { 0% { transform: translateX(-120%); } 100% { transform: translateX(330%); } }

/* Inline button spinner (Continue → Registering…). */
.btn-spin {
  display: inline-block; width: 13px; height: 13px; vertical-align: -2px; margin-right: 8px;
  border: 2px solid currentColor; border-right-color: transparent; border-radius: var(--r-circle);
  opacity: 0.85; animation: lab-spin 0.7s linear infinite;
}

.lab-result {
  margin-top: var(--s-5); display: flex; flex-direction: column; align-items: center; gap: var(--s-4);
  animation: lab-fade-up 0.5s var(--ease) both;
}
@keyframes lab-fade-up { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.lab-result-media {
  max-width: 100%; width: min(420px, 100%); border-radius: var(--r-md);
  border: 1px solid var(--line); background: var(--bg);
}
.lab-result-actions { display: flex; flex-wrap: wrap; gap: var(--s-3); justify-content: center; }

/* Resume banner — shown when a saved request is re-attached on revisit. */
.lab-resumed {
  margin: 0 0 var(--s-5); padding: var(--s-3) var(--s-4);
  background: rgba(61,170,181,0.10); border: 1px solid rgba(61,170,181,0.45);
  border-radius: var(--r-md); font-size: var(--fs-meta); line-height: 1.5; color: var(--off-70);
}
.lab-resumed strong { color: var(--teal); }

/* ── Payment box ──────────────────────────────────────────────────── */
.lab-pay {
  margin-top: var(--s-2); background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: var(--s-5);
}
.lab-pay:empty { display: none; }
.lab-pay-summary {
  display: flex; align-items: center; gap: var(--s-3); flex-wrap: wrap;
  font-family: var(--font-mono); font-size: var(--fs-body-sm);
  color: var(--off-70); margin-bottom: var(--s-5);
  padding-bottom: var(--s-4); border-bottom: 1px solid var(--line);
}
.lab-pay-arrow { color: var(--gold); }
.lab-pay-team { color: var(--gold); }
.lab-pay-amount-row {
  display: flex; align-items: flex-end; justify-content: space-between; gap: var(--s-4);
  flex-wrap: wrap;
}
.lab-pay-label {
  font-family: var(--font-mono); font-size: var(--fs-meta);
  letter-spacing: var(--track-default); text-transform: uppercase;
  color: var(--dim); margin-bottom: var(--s-2);
}
.lab-pay-amount {
  font-family: var(--font-mono); font-size: clamp(22px, 3.5vw, 30px);
  font-weight: 500; color: var(--off); word-break: break-all;
}
.lab-pay-amount .lab-pay-unit { font-size: 0.6em; color: var(--gold); }
.lab-pay-note { font-size: var(--fs-meta); color: var(--dim); margin-top: var(--s-2); }
.lab-pay-tip {
  margin-top: var(--s-5); padding-top: var(--s-4); border-top: 1px solid var(--line);
  font-size: var(--fs-meta); line-height: 1.5; color: var(--dim);
}
.lab-copy-btn { white-space: nowrap; }
.lab-pay-to { margin-top: var(--s-5); }
.lab-pay-addr-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--s-3);
  flex-wrap: wrap;
}
.lab-pay-addr {
  font-family: var(--font-mono); font-size: var(--fs-body-sm);
  color: var(--off-70); word-break: break-all; flex: 1 1 auto; min-width: 0;
}
.lab-pay-disclaimer {
  margin: var(--s-5) 0 0; padding: var(--s-3) var(--s-4);
  background: var(--gold-faint); border-radius: var(--r-md);
  font-size: var(--fs-meta); line-height: 1.5; color: var(--off-70);
}
.lab-pay-disclaimer strong { color: var(--gold); }

@media (max-width: 540px) {
  .lab-step { grid-template-columns: 32px 1fr; gap: var(--s-3); }
  .lab-step-num { width: 32px; height: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  .lab-status.is-waiting .lab-status-icon,
  .lab-status.is-generating .lab-status-icon,
  .lab-genbar span, .btn-spin, .lab-result { animation: none; }
}