/* Expo quiz — shared visitor UI styles. Postmodern tech-exhibition identity:
   oversized type, asymmetric panels, a subtle grid motif, restrained neon
   accents. Two themes (warm-light default, ink-dark), both WCAG 2.2 AA. */

:root {
  --bg: #f7f4ee;
  --bg-panel: #ffffff;
  --ink: #16151a;
  --ink-muted: #4a4854;
  --accent: #ff3d6e;
  --accent-ink: #ffffff;
  --accent-2: #0033ff;
  --success: #0a7a3d;
  --success-bg: #e3f6ea;
  --error: #b3261e;
  --error-bg: #fbe9e7;
  --border: #16151a;
  --focus-ring: #0033ff;
  --grid-line: rgba(22, 21, 26, 0.06);
  --radius: 4px;
  --font-display: "Helvetica Neue", Arial, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", sans-serif;
}

:root[data-theme="dark"] {
  --bg: #0f0e13;
  --bg-panel: #1b1a22;
  --ink: #f5f4f8;
  --ink-muted: #b8b5c4;
  --accent: #ff6b93;
  --accent-ink: #16151a;
  --accent-2: #6fa8ff;
  --success: #4fd88b;
  --success-bg: #10301e;
  --error: #ff8a80;
  --error-bg: #3a1512;
  --border: #f5f4f8;
  --focus-ring: #6fa8ff;
  --grid-line: rgba(245, 244, 248, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
}

.quiz-app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem clamp(1rem, 4vw, 2.5rem);
  border-bottom: 2px solid var(--border);
}

.app-brand {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 1rem;
}

.quiz-main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: clamp(1.25rem, 5vw, 4rem);
}

.screen {
  width: 100%;
  max-width: 56rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.screen:focus {
  outline: none;
}

.eyebrow {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.85rem;
  color: var(--accent);
  margin: 0;
}

.display-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 1.02;
  margin: 0;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--ink-muted);
  margin: 0;
  max-width: 40ch;
}

.attract-panel {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--bg-panel);
  max-width: 34rem;
  /* Asymmetric offset panel, restrained: skip on narrow screens. */
  margin-inline-start: 0;
}

@media (min-width: 700px) {
  .attract-panel {
    margin-inline-start: 2.5rem;
    border-left: 6px solid var(--accent);
  }
}

.attract-rules {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.5;
}

.btn {
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid var(--border);
  padding: 0.85rem 1.5rem;
  min-height: 44px;
  min-width: 44px;
  cursor: pointer;
  background: var(--bg-panel);
  color: var(--ink);
  font-size: 1rem;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.btn-secondary {
  background: var(--accent-2);
  color: #ffffff;
  border-color: var(--accent-2);
}

.btn-ghost {
  background: transparent;
}

.btn-huge {
  font-size: 1.4rem;
  padding: 1.1rem 2.5rem;
  align-self: flex-start;
}

.btn-large {
  font-size: 1.15rem;
  align-self: flex-start;
}

.btn:focus-visible,
.option-input:focus-visible + .option-card,
a:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.progress-bar {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.85rem;
  color: var(--ink-muted);
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.75rem;
}

.progress-score {
  color: var(--ink-muted);
  font-size: 1rem;
  text-transform: none;
  letter-spacing: normal;
  font-family: var(--font-body);
}

.answer-fieldset {
  border: none;
  margin: 0;
  padding: 0;
}

.question-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.5vw, 2.1rem);
  line-height: 1.2;
  padding: 0;
  margin: 0 0 1.25rem;
}

.options-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .options-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.option-wrapper {
  position: relative;
}

.option-input {
  position: absolute;
  opacity: 0;
  width: 44px;
  height: 44px;
  margin: 0;
}

.option-card {
  display: block;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  background: var(--bg-panel);
  min-height: 44px;
  font-size: 1.05rem;
  cursor: pointer;
}

.option-input:checked + .option-card {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.answer-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feedback-banner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
}

.feedback-correct {
  background: var(--success-bg);
  color: var(--success);
}

.feedback-incorrect {
  background: var(--error-bg);
  color: var(--error);
}

.feedback-icon {
  font-size: 1.75rem;
}

.feedback-points {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0;
}

.feedback-explanation {
  font-size: 1.05rem;
  color: var(--ink-muted);
  max-width: 50ch;
  margin: 0;
}

.result-win {
  color: var(--accent);
}

.prize-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  margin: 0;
}

.prize-claim {
  font-size: 1.1rem;
  color: var(--ink-muted);
  margin: 0;
  max-width: 44ch;
}

.result-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.idle-note {
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.idle-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 14, 19, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 10;
}

.idle-dialog {
  background: var(--bg-panel);
  color: var(--ink);
  border-radius: var(--radius);
  border: 2px solid var(--border);
  padding: 2rem;
  max-width: 26rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

#manage-root {
  max-width: 48rem; margin: 0 auto; padding: 2rem 1.5rem 5rem;
}
#manage-root h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
#manage-root .btn { margin: .5rem 0; }
.setup-field { display: flex; flex-direction: column; gap: .5rem; margin: 1rem 0; }
.setup-field input { min-height: 44px; font: inherit; max-width: 100%; }
#manage-root input[type="password"] {
  background: var(--bg-panel); color: var(--ink); border: 2px solid var(--border); padding: .75rem;
}