/* ============================================================================
   Quiz IA — Gênesis IA
   DESIGN DIRECTION: Neo-Brutalist (Hard Rule #16 — unused; design-direction lib #2)
   - Palette: paper #f4f3ee + ink #0a0a0a; electric blue #2b4cff + acid yellow #ffe600;
     red #ff3b3b as alarm. Flat, high-contrast, confident.
   - Type: heavy treated grotesk stack, ultrabold + tight tracking on display,
     wide UPPERCASE tracked labels for meta. No gradient-text.
   - Layout: thick 3px ink borders, hard offset shadows (6px 6px 0 #0a0a0a),
     0 border-radius blocks / full pills for chips, visible structure, no soft UI.
   - Signature: sticker/stamp "QUIZ" badge + oversized numbered step blocks that
     "clack" on press (translate into their shadow on :active).
   Self-contained (no CDN). Brand identity (Hard Rule #14) rendered inside the look.
   ============================================================================ */

:root {
  /* paper / ink */
  --bg: #f4f3ee;
  --bg-elev: #ffffff;
  --bg-card: #ffffff;
  --ink: #0a0a0a;
  --text: #0a0a0a;
  --text-muted: #2e2e2e;
  --text-dim: #595959;

  /* borders — brutalist = thick black lines */
  --border: #0a0a0a;
  --border-hover: #2b4cff;
  --bw: 3px;                 /* base border weight */
  --shadow: 6px 6px 0 var(--ink);
  --shadow-sm: 4px 4px 0 var(--ink);
  --shadow-lg: 9px 9px 0 var(--ink);

  /* accents */
  --accent: #2b4cff;         /* electric blue (primary) */
  --accent-purple: #2b4cff;  /* alias kept for legal pages */
  --accent-pink: #ff3b3b;    /* alias kept for legal pages (red) */
  --accent-amber: #ffe600;   /* acid yellow */
  --accent-orange: #ff7a00;
  --yellow: #ffe600;
  --red: #e0201f;            /* darkened from #ff3b3b for AA contrast w/ white text */

  /* status */
  --good: #067a4f;           /* darkened from #0aa46a for AA contrast as text-on-paper */
  --mid: #ff7a00;
  --low: #e0201f;

  /* radius — brutalist: blocks are square, controls are pills */
  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;
  --radius-xl: 0px;
  --pill: 999px;

  /* spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 56px;

  --display: 'Archivo Black', 'Arial Black', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --sans: 'Helvetica Neue', Helvetica, Arial, 'Segoe UI', Roboto, system-ui, sans-serif;
  --mono: 'SF Mono', ui-monospace, 'JetBrains Mono', 'Consolas', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* grid-paper backdrop (replaces the old purple bg-gradient) */
.bg-gradient {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(10,10,10,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10,10,10,.05) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ---------- screens ---------- */
.screen { display: none; min-height: 100vh; }
.screen.active { display: block; }

/* ---------- shared display type ---------- */
h1, h2, h3, h4 { line-height: 1.05; letter-spacing: -.02em; }
.kicker {
  font-family: var(--mono);
  font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .22em;
  color: var(--ink);
}
.gradient-text { color: var(--ink); }   /* legacy class name — brutalist solid treatment */

/* ======================================================================
   GATE SCREEN
   ====================================================================== */
#gate-screen.active { display: flex; align-items: center; justify-content: center; padding: var(--space-lg); }

.gate-container {
  width: 100%; max-width: 460px;
  background: var(--bg-elev);
  border: var(--bw) solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: var(--space-xl);
  position: relative;
}
/* sticker/stamp signature */
.gate-container::before {
  content: "QUIZ";
  position: absolute; top: -22px; right: -14px;
  background: var(--yellow);
  border: var(--bw) solid var(--ink);
  box-shadow: var(--shadow-sm);
  font-family: var(--display);
  font-size: 20px; letter-spacing: .04em;
  padding: 8px 14px;
  transform: rotate(6deg);
}
.gate-header { text-align: left; margin-bottom: var(--space-xl); }
.gate-header h1 {
  font-family: var(--display);
  font-size: clamp(38px, 9vw, 58px);
  text-transform: uppercase;
  letter-spacing: -.03em;
  margin-bottom: var(--space-sm);
}
.gate-header .subtitle { color: var(--text-muted); font-size: 16px; font-weight: 600; max-width: 38ch; }
.community-badge {
  display: inline-block;
  margin-top: var(--space-md);
  background: var(--accent);
  color: #fff;
  border: var(--bw) solid var(--ink);
  box-shadow: var(--shadow-sm);
  font-family: var(--mono);
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
  padding: 8px 12px;
}

.gate-form { display: flex; flex-direction: column; gap: var(--space-lg); }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-family: var(--mono);
  font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--ink);
}

input[type="email"], input[type="tel"], input[type="text"], input[type="password"], textarea, select {
  width: 100%;
  background: var(--bg-elev);
  border: var(--bw) solid var(--ink);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  padding: 13px 14px;
  border-radius: 0;
  transition: box-shadow .08s, transform .08s;
}
textarea { resize: vertical; min-height: 96px; line-height: 1.5; }
input:hover, textarea:hover, select:hover { border-color: var(--border-hover); }
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
  transform: translate(-2px, -2px);
}
input::placeholder, textarea::placeholder { color: #9a9a9a; }

/* ---------- buttons ---------- */
.btn-primary, .btn-secondary, .btn-danger {
  font-family: var(--display);
  font-size: 16px; letter-spacing: .01em;
  text-transform: uppercase;
  border: var(--bw) solid var(--ink);
  padding: 14px 20px;
  cursor: pointer;
  border-radius: 0;
  transition: transform .07s ease, box-shadow .07s ease, background .12s;
  box-shadow: var(--shadow);
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-secondary { background: var(--bg-elev); color: var(--ink); }
.btn-danger { background: var(--red); color: #fff; }
.btn-primary:hover, .btn-secondary:hover, .btn-danger:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-lg); }
.btn-primary:active, .btn-secondary:active, .btn-danger:active { transform: translate(6px, 6px); box-shadow: 0 0 0 var(--ink); }
.btn-primary:disabled, .btn-secondary:disabled, .btn-danger:disabled {
  opacity: .45; cursor: not-allowed; box-shadow: var(--shadow-sm);
  transform: none;
}
.btn-primary:disabled:hover, .btn-secondary:disabled:hover { transform: none; box-shadow: var(--shadow-sm); }
.btn-loading { display: inline; }

.error-message {
  background: var(--red); color: #fff;
  border: var(--bw) solid var(--ink);
  font-weight: 700; font-size: 14px;
  padding: 10px 14px; margin-top: 4px;
}
.gate-footer { margin-top: var(--space-xl); font-size: 14px; color: var(--text-muted); font-weight: 600; }
.gate-footer a { color: var(--accent); font-weight: 800; text-decoration: underline; text-underline-offset: 3px; }

/* ======================================================================
   KEY SCREEN
   ====================================================================== */
#key-screen.active { display: flex; align-items: center; justify-content: center; padding: var(--space-lg); }
.key-container {
  width: 100%; max-width: 560px;
  background: var(--bg-elev);
  border: var(--bw) solid var(--ink);
  box-shadow: var(--shadow-lg);
  padding: var(--space-xl);
}
.key-container h2 { font-family: var(--display); text-transform: uppercase; font-size: clamp(26px,5vw,34px); margin-bottom: var(--space-sm); }
.key-container .subtitle { color: var(--text-muted); font-weight: 600; margin-bottom: var(--space-lg); font-size: 15px; }
.key-inputs { display: flex; flex-direction: column; gap: var(--space-lg); }
.key-input-group { display: flex; flex-direction: column; gap: 6px; }
.key-input-group label { font-family: var(--mono); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.key-input-wrapper { display: flex; gap: var(--space-sm); }
.key-input-wrapper input { flex: 1; }
.key-toggle {
  background: var(--yellow); border: var(--bw) solid var(--ink);
  font-family: var(--mono); font-weight: 700; font-size: 12px; text-transform: uppercase;
  padding: 0 14px; cursor: pointer; box-shadow: var(--shadow-sm);
}
.key-toggle:active { transform: translate(4px,4px); box-shadow: none; }
.key-status { font-family: var(--mono); font-size: 12px; color: var(--text-dim); }
.key-status.saved { color: var(--good); font-weight: 700; }
.key-actions { display: flex; gap: var(--space-md); margin-top: var(--space-xl); flex-wrap: wrap; }
.key-actions .btn-primary, .key-actions .btn-secondary { flex: 1; min-width: 180px; }
.key-info { margin-top: var(--space-lg); border-top: var(--bw) solid var(--ink); padding-top: var(--space-md); }
.key-info summary { cursor: pointer; font-family: var(--mono); font-weight: 700; text-transform: uppercase; font-size: 12px; letter-spacing: .06em; }
.key-info-content { margin-top: var(--space-md); display: flex; flex-direction: column; gap: 8px; font-size: 14px; color: var(--text-muted); }
.key-info-content code { font-family: var(--mono); background: var(--yellow); padding: 1px 6px; border: 1.5px solid var(--ink); }

/* ======================================================================
   APP SCREEN
   ====================================================================== */
#app-screen.active { display: flex; flex-direction: column; min-height: 100vh; }
.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  background: var(--yellow);
  border-bottom: var(--bw) solid var(--ink);
  position: sticky; top: 0; z-index: 50;
}
.header-left { display: flex; align-items: center; gap: var(--space-md); }
.app-title {
  font-family: var(--display);
  font-size: 22px; text-transform: uppercase; letter-spacing: -.02em;
}
.app-title::before {
  content: "◆"; color: var(--accent); margin-right: 8px; font-size: 16px;
}
.header-right { display: flex; align-items: center; gap: var(--space-sm); }
.btn-icon {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-elev); color: var(--ink);
  border: var(--bw) solid var(--ink);
  cursor: pointer; box-shadow: var(--shadow-sm);
  transition: transform .07s, box-shadow .07s;
}
.btn-icon:hover { transform: translate(-2px,-2px); box-shadow: var(--shadow); }
.btn-icon:active { transform: translate(4px,4px); box-shadow: none; }

.app-main { flex: 1; width: 100%; max-width: 1400px; margin: 0 auto; padding: var(--space-xl); }

/* ---- studio: form panel + preview board ---- */
.studio {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.studio > * { min-width: 0; }   /* COR-026: let the preview column shrink */

/* form panel */
.panel {
  background: var(--bg-elev);
  border: var(--bw) solid var(--ink);
  box-shadow: var(--shadow);
}
.panel-head {
  background: var(--ink); color: #fff;
  padding: 13px var(--space-lg);
  font-family: var(--mono); font-weight: 700; text-transform: uppercase;
  font-size: 13px; letter-spacing: .16em;
  display: flex; align-items: center; justify-content: space-between;
}
.panel-head span:last-child { color: var(--yellow); }
.panel-body { padding: var(--space-lg); display: flex; flex-direction: column; gap: var(--space-lg); }
.field { display: flex; flex-direction: column; gap: 7px; }
.field > label {
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .06em;
}
.field .hint { font-size: 12px; color: var(--text-dim); font-weight: 500; }

/* chips (pills — the one rounded element in a square world) */
.chips { display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.chip {
  background: var(--bg-elev);
  border: var(--bw) solid var(--ink);
  border-radius: var(--pill);
  padding: 7px 14px;
  font-size: 13px; font-weight: 800;
  cursor: pointer;
  transition: transform .06s, background .12s, color .12s;
}
.chip:hover { transform: translateY(-2px); border-color: var(--border-hover); }
.chip.active { background: var(--accent); color: #fff; }
.chip.active:hover { border-color: var(--ink); }
.chip.active.amber { background: var(--yellow); color: var(--ink); }

.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
@media (max-width: 480px) { .field-grid { grid-template-columns: 1fr; } }

.model-row { display: flex; flex-direction: column; gap: 7px; }
.generate-row { display: flex; flex-direction: column; gap: var(--space-sm); }
#generate-btn { width: 100%; font-size: 18px; padding: 16px; }
.byok-note { font-family: var(--mono); font-size: 11px; color: var(--text-dim); text-align: center; }
.byok-note a { color: var(--accent); font-weight: 700; }

/* ---- preview board ---- */
.board {
  background: var(--bg-elev);
  border: var(--bw) solid var(--ink);
  box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  min-height: 620px;
}
.board-bar {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-md); flex-wrap: wrap;
  padding: 10px var(--space-md);
  border-bottom: var(--bw) solid var(--ink);
  background: var(--bg);
}
.tabs { display: flex; gap: 0; }
.tab {
  font-family: var(--mono); font-weight: 700; text-transform: uppercase;
  font-size: 12px; letter-spacing: .06em;
  background: var(--bg-elev); color: var(--ink);
  border: var(--bw) solid var(--ink);
  margin-right: -3px;
  padding: 9px 16px; cursor: pointer;
}
.tab.active { background: var(--accent); color: #fff; }
.tab:disabled { opacity: .4; cursor: not-allowed; }
.board-actions { display: flex; gap: var(--space-sm); align-items: center; flex-wrap: wrap; }
.mini-btn {
  font-family: var(--mono); font-weight: 700; text-transform: uppercase; font-size: 12px;
  background: var(--yellow); border: var(--bw) solid var(--ink);
  padding: 9px 14px; cursor: pointer; box-shadow: var(--shadow-sm);
  transition: transform .06s, box-shadow .06s;
}
.mini-btn:hover { transform: translate(-1px,-1px); box-shadow: var(--shadow); }
.mini-btn:active { transform: translate(3px,3px); box-shadow: none; }
.mini-btn:disabled { opacity: .4; cursor: not-allowed; box-shadow: var(--shadow-sm); transform: none; }
.viewport-toggle { display: flex; gap: 0; }
.viewport-toggle button {
  font-family: var(--mono); font-weight: 700; font-size: 11px; text-transform: uppercase;
  background: var(--bg-elev); border: var(--bw) solid var(--ink); margin-right: -3px;
  padding: 8px 11px; cursor: pointer;
}
.viewport-toggle button.active { background: var(--ink); color: #fff; }

.board-stage { flex: 1; position: relative; display: flex; overflow: hidden; }

/* empty state */
.board-empty, .board-loading {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: var(--space-2xl) var(--space-lg); gap: var(--space-md); width: 100%;
}
.board-empty .stamp {
  font-family: var(--display); font-size: clamp(40px, 8vw, 72px);
  text-transform: uppercase; letter-spacing: -.03em;
  background: var(--yellow); border: var(--bw) solid var(--ink); box-shadow: var(--shadow);
  padding: 8px 22px; transform: rotate(-3deg);
}
.board-empty p, .board-loading p { color: var(--text-muted); font-weight: 600; max-width: 44ch; }
.board-loading .spinner {
  width: 56px; height: 56px;
  border: 6px solid var(--ink); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#loading-step { font-family: var(--mono); font-weight: 700; text-transform: uppercase; letter-spacing: .04em; font-size: 13px; }

/* preview iframe */
.preview-stage { flex: 1; display: none; padding: var(--space-md); background: repeating-conic-gradient(#eee 0% 25%, #fff 0% 50%) 0 0 / 22px 22px; }
.preview-frame-wrap {
  flex: 1; margin: 0 auto; width: 100%;
  border: var(--bw) solid var(--ink); box-shadow: var(--shadow);
  background: #fff; overflow: hidden; transition: max-width .2s;
  display: flex;
}
.preview-frame-wrap.mobile { max-width: 390px; }
#preview-frame { width: 100%; height: 70vh; min-height: 520px; border: 0; background: #fff; }

/* outline */
.outline-stage { display: none; padding: var(--space-lg); overflow-y: auto; width: 100%; }
.outline-item {
  border: var(--bw) solid var(--ink); box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-md); background: var(--bg-elev);
}
.oi-head {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--ink); color: #fff; padding: 8px 12px;
}
.oi-tag { font-family: var(--mono); font-weight: 700; text-transform: uppercase; font-size: 11px; letter-spacing: .08em; }
.oi-copy {
  font-family: var(--mono); font-weight: 700; text-transform: uppercase; font-size: 10px;
  background: var(--yellow); color: var(--ink); border: 2px solid #fff; padding: 3px 9px; cursor: pointer;
}
.oi-body { padding: 14px 16px; }
.oi-body h4 { font-size: 15px; margin-bottom: 6px; line-height: 1.3; letter-spacing: normal; }
.oi-body p { font-size: 14px; color: var(--text-muted); line-height: 1.5; }
.oi-body .opt { font-size: 13px; color: var(--text-dim); padding: 3px 0; }

/* code */
.code-stage { display: none; width: 100%; padding: 0; overflow: hidden; }
#code-pre {
  margin: 0; padding: var(--space-lg);
  font-family: var(--mono); font-size: 12.5px; line-height: 1.6;
  background: var(--ink); color: #e8e8e8;
  white-space: pre-wrap; word-break: break-word;
  height: 70vh; min-height: 520px; overflow: auto;
}

/* ---------- footer ---------- */
.app-footer {
  border-top: var(--bw) solid var(--ink);
  padding: var(--space-lg) var(--space-xl);
  text-align: center; font-size: 13px; font-weight: 600; color: var(--text-muted);
  background: var(--bg-elev);
}
.app-footer strong { color: var(--ink); }
.footer-links { margin-top: 6px; font-size: 12px; }
.footer-links a { color: var(--text-dim); text-decoration: underline; }
.footer-sep { margin: 0 8px; color: var(--text-dim); }

/* ---------- modal ---------- */
.modal { position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center; padding: var(--space-lg); }
.modal-overlay { position: absolute; inset: 0; background: rgba(10,10,10,.5); }
.modal-content {
  position: relative; width: 100%; max-width: 520px;
  background: var(--bg-elev); border: var(--bw) solid var(--ink); box-shadow: var(--shadow-lg);
}
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: var(--space-md) var(--space-lg); border-bottom: var(--bw) solid var(--ink); background: var(--yellow); }
.modal-header h3 { font-family: var(--display); text-transform: uppercase; font-size: 18px; }
.modal-content .key-inputs { padding: var(--space-lg); }
.modal-actions { display: flex; gap: var(--space-md); padding: 0 var(--space-lg) var(--space-lg); flex-wrap: wrap; }
.modal-actions .btn-primary, .modal-actions .btn-danger { flex: 1; min-width: 160px; }

/* ---------- toast ---------- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(140%);
  background: var(--ink); color: #fff;
  border: var(--bw) solid var(--ink); box-shadow: var(--shadow);
  font-weight: 700; font-size: 14px;
  padding: 13px 22px; z-index: 300; transition: transform .25s; max-width: 90vw; text-align: center;
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast.err { background: var(--red); }

/* ---------- responsive ---------- */
@media (max-width: 920px) {
  .studio { grid-template-columns: 1fr; gap: var(--space-lg); }
  .app-main { padding: var(--space-md); }
  .board { min-height: 520px; }
}
@media (max-width: 768px) {
  .gate-header h1 { font-size: clamp(34px, 10vw, 48px); }
  .panel-body { gap: var(--space-md); }
}
@media (max-width: 560px) {
  .app-header { padding: var(--space-sm) var(--space-md); }
  .app-title { font-size: 17px; }
  .gate-container, .key-container { padding: var(--space-lg); box-shadow: var(--shadow); }
  .preview-stage { padding: var(--space-sm); }
  #preview-frame, #code-pre { height: 60vh; }
  .board-bar { gap: var(--space-sm); }
  .board-actions { flex: 1 1 100%; justify-content: flex-start; }
}
@media (max-width: 420px) {
  #gate-screen.active, #key-screen.active { padding: var(--space-md); }
  .gate-container, .key-container { padding: var(--space-md); }
  .gate-container::before { top: -18px; right: -8px; font-size: 16px; padding: 6px 11px; }
  .gate-header h1 { font-size: clamp(30px, 11vw, 38px); }
  .community-badge { font-size: 10px; }
  .key-actions { flex-direction: column; }
  .key-actions .btn-primary, .key-actions .btn-secondary { min-width: 0; }
  .modal-actions { flex-direction: column; }
  .modal-actions .btn-primary, .modal-actions .btn-danger { min-width: 0; }
  .board-bar { flex-direction: column; align-items: stretch; }
  .tabs { width: 100%; }
  .tabs .tab { flex: 1; }
  .board-actions { width: 100%; justify-content: space-between; }
}

/* keyboard focus visibility (accessibility floor) */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 2px;
}