/* SEC+ Study — mobile-first design system */

:root {
  --bg: #070b14;
  --bg-elevated: #0c1220;
  --surface: #141c2e;
  --surface-2: #1a2438;
  --surface-3: #222d44;
  --border: rgba(148, 163, 184, 0.16);
  --border-strong: rgba(148, 163, 184, 0.28);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-soft: #cbd5e1;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --accent-soft: rgba(56, 189, 248, 0.14);
  --correct: #34d399;
  --correct-bg: rgba(52, 211, 153, 0.14);
  --incorrect: #f87171;
  --incorrect-bg: rgba(248, 113, 113, 0.14);
  --warning: #fbbf24;
  --warning-bg: rgba(251, 191, 36, 0.14);
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --header-h: 56px;
  --nav-h: 72px;
  --max: 760px;
  --touch: 48px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", Consolas, monospace;
  color-scheme: dark;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
}

html {
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(14, 165, 233, 0.08), transparent 50%),
    radial-gradient(900px 420px at 100% 0%, rgba(52, 211, 153, 0.05), transparent 46%),
    var(--bg);
}

body {
  min-height: 100dvh;
  overflow-x: hidden;
}

img,
svg {
  max-width: 100%;
  display: block;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 80;
  background: var(--accent);
  color: #062033;
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 700;
}

.skip-link:focus {
  top: 12px;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  padding: 8px 16px;
  padding-top: calc(8px + env(safe-area-inset-top, 0px));
  background: rgba(7, 11, 20, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 0.92rem;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-version {
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.brand-mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1rem;
}

.streak-chip {
  min-height: 36px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-soft);
  font-weight: 700;
  font-size: 0.92rem;
}

.app-main {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 16px 16px calc(var(--nav-h) + 56px + env(safe-area-inset-bottom, 0px));
}

.view {
  display: none;
  animation: fade-up 220ms ease;
}

.view.is-active {
  display: block;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 2px;
  padding: 6px 6px calc(6px + env(safe-area-inset-bottom, 0px));
  background: rgba(12, 18, 32, 0.94);
  border-top: 1px solid var(--border);
  backdrop-filter: blur(16px);
}

.nav-btn {
  min-height: 56px;
  border-radius: 14px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 0.62rem;
  font-weight: 650;
}

.nav-btn svg {
  width: 22px;
  height: 22px;
}

.nav-btn.is-active {
  color: var(--accent);
  background: var(--accent-soft);
}

.nav-btn {
  position: relative;
}

.nav-badge {
  position: absolute;
  top: 4px;
  right: 10px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--accent);
  color: #062033;
  font-size: 0.65rem;
  font-weight: 800;
  line-height: 18px;
  text-align: center;
}

.page-kicker {
  margin: 0 0 6px;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.page-title {
  margin: 0 0 16px;
  font-size: 1.7rem;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.muted {
  color: var(--text-muted);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.card-button {
  width: 100%;
  text-align: left;
  min-height: var(--touch);
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.card-button:active {
  transform: scale(0.985);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stack {
  display: grid;
  gap: 12px;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.stat {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}

.stat .label {
  display: block;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.stat .value {
  display: block;
  margin-top: 6px;
  font-size: 1.35rem;
  font-weight: 800;
}

.progress-wrap {
  display: flex;
  align-items: center;
  gap: 16px;
}

.ring {
  --pct: 0;
  width: 88px;
  height: 88px;
  flex: 0 0 88px;
}

.ring circle {
  fill: none;
  stroke-width: 3.4;
}

.ring .track {
  stroke: var(--surface-3);
}

.ring .fill {
  stroke: var(--accent);
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
  stroke-dasharray: calc(var(--pct) * 100.53 / 100) 100.53;
  transition: stroke-dasharray 280ms ease;
}

.progress-copy h2 {
  margin: 0 0 4px;
  font-size: 1.05rem;
}

.bar {
  height: 8px;
  background: var(--surface-3);
  border-radius: 999px;
  overflow: hidden;
}

.bar > span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent-strong), var(--accent));
  border-radius: inherit;
  transition: width 280ms ease;
}

.bar.is-warning > span {
  background: var(--warning);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--touch);
  padding: 0 16px;
  border-radius: 14px;
  font-weight: 750;
  transition: transform 150ms ease, filter 150ms ease, background 150ms ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  width: 100%;
  background: var(--accent);
  color: #062033;
}

.btn-secondary {
  width: 100%;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--text-soft);
}

.btn-danger {
  width: 100%;
  background: var(--incorrect-bg);
  color: var(--incorrect);
  border: 1px solid rgba(248, 113, 113, 0.35);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.action-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 118px;
  padding: 14px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  text-align: left;
}

.action-card .icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 12px;
}

.action-card strong {
  display: block;
  font-size: 1rem;
}

.action-card span {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.section-title {
  margin: 8px 0 10px;
  font-size: 1.05rem;
}

.domain-row {
  width: 100%;
  text-align: left;
}

.domain-row header,
.row-between {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
}

.search {
  width: 100%;
  min-height: var(--touch);
  padding: 0 14px 0 42px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' viewBox='0 0 24 24'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='M20 20l-3-3'/%3E%3C/svg%3E") 14px 50% no-repeat;
  color: var(--text);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  min-height: 40px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  font-weight: 650;
}

.chip.is-selected {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: transparent;
}

.option {
  width: 100%;
  min-height: 56px;
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  text-align: left;
  font-weight: 650;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.option .letter {
  flex: 0 0 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--surface-3);
  font-size: 0.82rem;
}

.option-check {
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border: 2px solid var(--border-strong);
  border-radius: 6px;
  background: var(--surface-2);
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  line-height: 1;
}

.option.is-selected .option-check {
  border-color: var(--accent);
  background: var(--accent);
  color: #062033;
}

.option.is-selected .option-check::after {
  content: "✓";
  font-weight: 800;
}

.option.is-correct .option-check {
  border-color: var(--correct);
  background: var(--correct);
  color: #052e1f;
}

.option.is-incorrect .option-check {
  border-color: var(--incorrect);
  background: var(--incorrect);
  color: #3f0d0d;
}

.question-hint {
  margin: 0 0 10px;
  font-weight: 800;
  color: var(--text-soft);
}

.option.is-selected {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.option.is-correct {
  border-color: var(--correct);
  background: var(--correct-bg);
}

.option.is-incorrect {
  border-color: var(--incorrect);
  background: var(--incorrect-bg);
}

.option:disabled {
  opacity: 1;
  cursor: default;
}

.option-copy {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.option-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.option-tag {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  padding: 2px 8px;
  border-radius: 999px;
  width: fit-content;
}

.option-tag-yours {
  background: var(--accent-soft);
  color: var(--accent);
}

.option-tag-correct {
  background: var(--correct-bg);
  color: var(--correct);
}

.answer-review {
  border-radius: var(--radius);
  padding: 14px;
  border: 1px solid var(--border);
  display: grid;
  gap: 12px;
}

.answer-review.is-ok {
  background: var(--correct-bg);
  border-color: rgba(52, 211, 153, 0.35);
}

.answer-review.is-bad {
  background: var(--incorrect-bg);
  border-color: rgba(248, 113, 113, 0.35);
}

.review-status {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
}

.review-selected,
.review-correct-line {
  margin: 0;
}

.review-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px;
}

.review-item h4 {
  margin: 0 0 8px;
  font-size: 0.92rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.review-item p {
  margin: 0 0 8px;
}

.review-item p:last-child {
  margin-bottom: 0;
}

.review-item.is-right {
  border-color: rgba(52, 211, 153, 0.45);
}

.review-item.is-wrong {
  border-color: rgba(248, 113, 113, 0.35);
}

.review-chip {
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 999px;
}

.review-chip-yours {
  background: var(--accent-soft);
  color: var(--accent);
}

.review-chip-correct {
  background: var(--correct-bg);
  color: var(--correct);
}

.review-chip-missed {
  background: var(--warning-bg);
  color: var(--warning);
}

.feedback {
  border-radius: var(--radius);
  padding: 14px;
  border: 1px solid var(--border);
}

.feedback.ok {
  background: var(--correct-bg);
  border-color: rgba(52, 211, 153, 0.35);
}

.feedback.bad {
  background: var(--incorrect-bg);
  border-color: rgba(248, 113, 113, 0.35);
}

.quiz-top {
  position: sticky;
  top: calc(var(--header-h) + env(safe-area-inset-top, 0px) - 8px);
  background: rgba(7, 11, 20, 0.92);
  padding: 8px 0 12px;
  margin: 0 -4px 8px;
  z-index: 5;
}

.question-text {
  font-size: 1.12rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

.icon-btn {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
}

.icon-btn.is-on {
  color: var(--warning);
  border-color: rgba(251, 191, 36, 0.45);
  background: var(--warning-bg);
}

.flip-scene {
  perspective: 1000px;
}

.flip-card {
  min-height: 260px;
  position: relative;
}

.flip-card-inner {
  position: relative;
  min-height: 260px;
  transform-style: preserve-3d;
  transition: transform 280ms ease;
}

.flip-card.is-flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: var(--radius-lg);
  padding: 22px 18px;
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.face-back {
  transform: rotateY(180deg);
  justify-content: flex-start;
  overflow: auto;
}

.controls-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.empty {
  text-align: center;
  padding: 32px 16px;
  color: var(--text-muted);
}

.empty strong {
  display: block;
  color: var(--text);
  margin-bottom: 6px;
  font-size: 1.1rem;
}

.accordion {
  width: 100%;
  text-align: left;
}

.accordion summary {
  list-style: none;
  cursor: pointer;
  font-weight: 750;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.results-hero {
  text-align: center;
  padding: 24px 12px;
}

.results-score {
  font-size: 3rem;
  font-weight: 850;
  letter-spacing: -0.04em;
  margin: 8px 0 0;
}

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

.modal-root {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(0, 0, 0, 0.55);
  display: grid;
  place-items: end center;
  padding: 16px;
  padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
}

.modal {
  width: min(100%, 440px);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.disclaimer {
  margin-top: 24px;
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1.4;
}

.topic-block h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  background: var(--surface-3);
}

.custom-field {
  display: grid;
  gap: 6px;
}

.custom-field input[type="number"] {
  min-height: var(--touch);
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  padding: 0 12px;
}

.check {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
}

.check input {
  width: 20px;
  height: 20px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (min-width: 840px) {
  body {
    display: grid;
    grid-template-columns: 220px 1fr;
  }

  .app-header {
    grid-column: 2;
  }

  .app-main {
    grid-column: 2;
    padding-bottom: 40px;
  }

  .bottom-nav {
    left: 0;
    right: auto;
    top: 0;
    bottom: 0;
    width: 220px;
    grid-template-columns: 1fr;
    align-content: start;
    padding: calc(16px + env(safe-area-inset-top, 0px)) 12px 16px;
    border-top: none;
    border-right: 1px solid var(--border);
    background: rgba(8, 12, 22, 0.96);
  }

  .nav-btn {
    flex-direction: row;
    justify-content: flex-start;
    gap: 10px;
    padding: 0 12px;
    font-size: 0.92rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .flip-card.is-flipped .flip-card-inner {
    transform: none;
  }

  .flip-card.is-flipped .face-front {
    display: none;
  }

  .flip-card.is-flipped .face-back {
    transform: none;
    position: relative;
  }
}

/* V2 additions — keep V1 look, add exam/practice/review helpers */

.rec-card .btn {
  display: inline-flex;
}

.action-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  min-height: 96px;
  padding: 12px;
  text-align: left;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: inherit;
}

.action-card .icon {
  font-size: 1.1rem;
}

.action-card span:last-child {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.action-card:active {
  transform: scale(0.985);
}

.pill-weak {
  background: var(--warning-bg);
  color: var(--warning);
}

.pill-strong {
  background: var(--correct-bg);
  color: var(--correct);
}

.nav-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  max-height: 220px;
  overflow: auto;
}

.nav-dot {
  min-height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-muted);
  font-weight: 700;
}

.nav-dot.is-answered {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: transparent;
}

.nav-dot.is-flagged {
  box-shadow: inset 0 0 0 2px var(--warning);
}

.nav-dot.is-current {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  color: var(--text);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--nav-h) + 16px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%) translateY(12px);
  z-index: 70;
  max-width: min(90vw, 360px);
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--surface-3);
  border: 1px solid var(--border-strong);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-on {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.wrap-4 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.wrap-4 .btn {
  min-height: 44px;
}

.custom-field select,
.custom-field input,
.custom-field textarea {
  width: 100%;
  min-height: 44px;
  margin-top: 6px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  resize: vertical;
}

.cov-bar {
  font-family: var(--mono);
  letter-spacing: -0.08em;
  color: var(--accent);
}

.trend-row {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  min-height: 100px;
  overflow-x: auto;
}

.trend-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 44px;
  font-size: 0.75rem;
}

.trend-bar {
  width: 18px;
  background: var(--accent);
  border-radius: 8px 8px 4px 4px;
}

.progress-section summary {
  font-size: 1.05rem;
}

html.reduced-motion *,
html.reduced-motion *::before,
html.reduced-motion *::after {
  animation: none !important;
  transition: none !important;
}

.icon-btn {
  min-width: 44px;
  min-height: 44px;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

body.is-locked {
  overflow: hidden;
}

body.is-locked .skip-link,
body.is-locked .app-header,
body.is-locked .app-main,
body.is-locked .bottom-nav {
  display: none !important;
}

body:not(.is-locked) .site-gate {
  display: none;
}

.site-gate {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 20px;
  background: var(--bg);
}

.site-gate-card {
  width: min(92vw, 360px);
  padding: 22px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}

.site-gate-card h1 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}

.site-gate-pass-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
  width: 100%;
}

.site-gate .custom-field .site-gate-pass-row input,
.site-gate-pass-row input {
  flex: 1 1 auto;
  min-width: 0;
  width: auto;
  color: var(--text);
  background: var(--surface-2);
  caret-color: var(--accent);
}

.site-gate .custom-field .site-gate-pass-row input:focus,
.site-gate-pass-row input:focus {
  border-color: var(--accent-strong);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.site-gate .site-gate-pass-row .btn,
.site-gate .site-gate-pass-row .btn-secondary {
  flex: 0 0 auto;
  width: auto;
  min-width: 0;
  white-space: nowrap;
  padding: 0 12px;
}

.site-gate-error {
  color: var(--incorrect);
  margin: 0;
}

.placeholder-banner {
  margin: 0 0 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--warning);
  background: var(--warning-bg);
  color: var(--text);
  font-size: 0.85rem;
}

.lock-btn {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 700;
}

.pbq-match-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.pbq-engine .option {
  min-height: var(--touch);
}

.pbq-stimulus {
  overflow-x: auto;
}

.pbq-rules-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.pbq-rules-table th,
.pbq-rules-table td {
  border: 1px solid var(--border);
  padding: 8px;
  text-align: left;
}

.pbq-part {
  margin-top: 12px;
}

.pbq-diagram {
  display: grid;
  gap: 8px;
}

.pbq-node {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
}

@media (max-width: 640px) {
  .pbq-match-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 360px) {
  .grid-2 {
    gap: 8px;
  }

  .page-title {
    font-size: 1.5rem;
  }

  .nav-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}