/* ============================================================
   OSCE Study — card flipper (v2: flip animation + task + arrows)
   ============================================================ */

.osce-page { max-width: 880px; }
.osce-shell { display: flex; flex-direction: column; gap: var(--spacing-lg); }
.osce-loading { text-align: center; padding: var(--spacing-xl); color: var(--text-muted); }

.osce-lobby-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  flex-wrap: wrap; gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}
.osce-lobby-head h1 { margin: 0 0 4px; }
.osce-tagline { margin: 0; max-width: 540px; }

.osce-stats { display: flex; gap: var(--spacing-sm); }
.osce-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 16px;
  text-align: center;
  min-width: 70px;
}
.osce-stat__num { font-size: 1.4rem; font-weight: 600; color: var(--accent); }
.osce-stat__lbl { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }

.osce-filters { padding: var(--spacing-md) var(--spacing-lg); }
.osce-filter-row {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 6px 8px; padding: 6px 0;
}
.osce-filter-row + .osce-filter-row { border-top: 1px solid var(--border); }
.osce-filter-label {
  font-size: 0.85rem; color: var(--text-muted);
  min-width: 110px; font-weight: 500;
}
.osce-chip {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.osce-chip:hover { background: var(--bg-card-hover); }
.osce-chip--active {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}
.osce-cta-row { display: flex; gap: var(--spacing-sm); align-items: center; }

.osce-station-bar {
  display: flex; align-items: center; gap: var(--spacing-md);
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  flex-wrap: wrap;
}
.osce-nav-arrow {
  font-size: 1.1rem;
  font-weight: 600;
  padding: 4px 14px;
  min-width: 44px;
}
.osce-nav-arrow:disabled { opacity: 0.35; cursor: not-allowed; }
.osce-deck-pos {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  min-width: 60px;
  text-align: center;
}
.osce-deck-type {
  font-size: 0.85rem;
  padding: 2px 10px;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 999px;
}
.osce-flag-btn { margin-left: auto; font-size: 1.1rem; padding: 4px 12px; }
.osce-flag-btn--on {
  color: var(--warning);
  background: rgba(212,171,103,0.18);
  border-color: var(--warning);
}
.osce-flag-btn--on:hover { background: rgba(212,171,103,0.28); }

.osce-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--spacing-lg) var(--spacing-xl);
  box-shadow: 0 1px 0 rgba(0,0,0,0.04);
}
.osce-stage-body { animation: osce-fade-in 0.18s ease-out; }
@keyframes osce-fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.osce-stage-pill {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-muted);
}
.osce-stage-pill--door    { color: var(--accent); border-color: var(--accent); background: var(--accent-dim); }
.osce-stage-pill--walk-in { color: var(--warning); border-color: var(--warning); }
.osce-stage-pill--back    { color: var(--success, var(--accent)); border-color: var(--success, var(--accent)); }

.osce-door-hint {
  margin-top: var(--spacing-md);
  font-style: italic;
  font-size: 0.9rem;
}

.osce-timer {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  min-width: 56px;
  text-align: center;
}
.osce-timer--warning {
  background: rgba(212,84,84,0.15);
  color: #d45454;
  border-color: #d45454;
  animation: osce-timer-pulse 1s ease-in-out infinite alternate;
}
.osce-timer--off { display: none; }

@keyframes osce-timer-pulse {
  from { opacity: 0.7; }
  to   { opacity: 1; }
}

.osce-front-field--fiveMin {
  animation: osce-bell-reveal 0.35s ease-out;
  box-shadow: 0 0 0 2px var(--accent);
}
@keyframes osce-bell-reveal {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.btn-warning {
  background: var(--warning);
  color: #1a1a1a;
  border-color: var(--warning);
}
.btn-warning:hover { filter: brightness(1.08); }

.osce-card-head {
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}
.osce-card-head h2 { margin: 0; font-size: 1.25rem; line-height: 1.3; }
.osce-card-head .text-muted { margin: 4px 0 0; font-size: 0.85rem; }

.osce-front-field {
  background: var(--bg-secondary);
  border: 1px solid var(--border);  border-radius: 6px;
  padding: 12px 16px;
  margin-bottom: var(--spacing-md);
}
.osce-front-field--door { border-left-color: var(--accent); }
.osce-front-field--opening { border-left-color: var(--warning); }
.osce-front-field--profile { border-left-color: var(--accent); background: var(--bg-input); }
.osce-front-field--sp { border-left-color: var(--warning); font-style: italic; }
.osce-front-field--table { border-left-color: var(--accent); }
.osce-front-field--note { border-left-color: var(--warning); background: rgba(212,171,103,0.10); }
.osce-front-field--fiveMin { border-left-color: var(--accent); background: var(--accent-dim); }
.osce-front-field--fiveMin .osce-field-label { color: var(--accent); }

.osce-field-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.osce-field-body { font-size: 0.98rem; line-height: 1.6; color: var(--text-primary); }
.osce-field-body p { margin: 0 0 6px; }
.osce-field-body p:last-child { margin: 0; }
.osce-field-body ul, .osce-field-body ol { margin: 6px 0; padding-left: 1.4rem; }
.osce-field-body li { margin-bottom: 4px; line-height: 1.55; }
.osce-front-field--opening .osce-field-body { font-style: italic; color: var(--text-primary); }
.osce-front-prose-hint { margin-top: 10px; font-size: 0.85rem; }

.osce-stage-controls {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  align-items: center;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-md);
  border-top: 1px dashed var(--border);
  flex-wrap: wrap;
}

.osce-section { margin: 0 0 var(--spacing-lg); }
.osce-section-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 5px 14px;
  border-radius: 999px;
  display: inline-block;
  margin: 0 0 var(--spacing-sm);
}
.osce-section-body {
  color: var(--text-primary);
  font-size: 0.98rem;
  line-height: 1.65;
}
.osce-section-body p { margin: 0 0 var(--spacing-sm); }
.osce-section-body p:last-child { margin-bottom: 0; }
.osce-section-body ul, .osce-section-body ol {
  margin: var(--spacing-sm) 0 var(--spacing-md);
  padding-left: 1.5rem;
}
.osce-section-body li { margin-bottom: 6px; line-height: 1.55; }
.osce-section-body li::marker { color: var(--text-muted); }

.osce-got-it {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.osce-got-it:hover { background: var(--accent-hover); color: #fff; }

.osce-complete { text-align: center; padding: var(--spacing-xl); }
.osce-complete h2 { margin-bottom: var(--spacing-sm); }

.osce-toast {
  position: fixed;
  bottom: 32px; left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.9rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s, transform 0.15s;
  z-index: 1000;
}
.osce-toast--visible { opacity: 1; transform: translateX(-50%) translateY(0); }

.osce-raw {
  background: var(--bg-input);
  border: 1px solid var(--border);
  padding: var(--spacing-md);
  border-radius: 4px;
  font-size: 0.85rem;
  max-height: 360px;
  overflow: auto;
  white-space: pre-wrap;
  font-family: var(--font-mono);
}

@media (max-width: 720px) {
  .osce-lobby-head { flex-direction: column; }
  .osce-stats { width: 100%; }
  .osce-stat { flex: 1; }
  .osce-filter-label { min-width: 100%; }
  .osce-card { padding: var(--spacing-md); }
}

@media (prefers-reduced-motion: reduce) {
  .osce-stage-body { animation: none; }
}