/* ═══════════════════════════════════════════════════════
   Bias Buster — Style
   Ages 9–12 · Ethics Review Board Theme
   Palette: deep teal-navy · electric green · off-white cards
════════════════════════════════════════════════════════ */

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

:root {
  --bg:        #0c1a27;
  --surface:   #132130;
  --surface2:  #1a2d40;
  --border:    #1e3d52;
  --green:     #00c896;
  --green-dim: #00896a;
  --amber:     #f59e0b;
  --danger:    #ef4444;
  --fair:      #10b981;
  --text:      #e2e8f0;
  --dim:       #64748b;
  --card-bg:   #fffdf5;
  --card-ink:  #1a2e3b;
  --card-dim:  #4a5568;
  --radius:    12px;
  --shadow:    0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.7);
}

html, body {
  height: 100%;
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ─── Screen system ─────────────────────────────────── */

.screen {
  display: none; position: fixed; inset: 0;
  z-index: 10; flex-direction: column;
  overflow: hidden;
}
.screen.active { display: flex; }

/* ═══════════════════════════════════════════════════════
   INTRO SCREEN
════════════════════════════════════════════════════════ */

#screen-intro {
  align-items: center; justify-content: center;
  padding: 24px;
  background:
    radial-gradient(ellipse at 25% 35%, rgba(0,200,150,0.07) 0%, transparent 55%),
    radial-gradient(ellipse at 75% 65%, rgba(0,150,200,0.05) 0%, transparent 50%);
}

.intro-inner {
  display: flex; flex-direction: column; align-items: center;
  gap: 18px; max-width: 600px; width: 100%; text-align: center;
}

.board-seal {
  font-size: 3.5rem;
  animation: sealPop 0.6s cubic-bezier(0.34,1.56,0.64,1) both;
}

@keyframes sealPop {
  0%   { transform: scale(0) rotate(-30deg); opacity: 0; }
  100% { transform: scale(1) rotate(0deg);   opacity: 1; }
}

.intro-eyebrow {
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.3em;
  color: var(--green); text-transform: uppercase;
}

.intro-title {
  font-size: clamp(2.4rem, 8vw, 3.8rem);
  font-weight: 900; line-height: 1.05;
  color: var(--text); letter-spacing: -0.02em;
}

.intro-tagline {
  font-size: clamp(0.95rem, 2.5vw, 1.1rem);
  color: var(--dim); line-height: 1.65;
}
.intro-tagline strong { color: var(--text); }

/* How to play steps */
.intro-steps {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  justify-content: center;
}

.step-item {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px;
  min-width: 90px;
}
.step-icon { font-size: 1.5rem; }
.step-text  { font-size: 0.72rem; color: var(--dim); text-align: center; }
.step-arrow { font-size: 1.1rem; color: var(--green); opacity: 0.6; }

/* Case progress dots */
.cases-preview {
  display: flex; gap: 10px; align-items: center;
}
.case-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border); border: 1.5px solid var(--border);
  transition: all 0.2s ease;
}
.case-dot.active { background: var(--green); border-color: var(--green); }

.intro-meta {
  display: flex; gap: 8px; flex-wrap: wrap; justify-content: center;
}
.meta-pill {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 50px; padding: 4px 12px;
  font-size: 0.78rem; color: var(--dim);
}

/* ═══════════════════════════════════════════════════════
   GAME SCREEN
════════════════════════════════════════════════════════ */

#screen-game {
  background: linear-gradient(160deg, #0c1a27 0%, #0e2235 100%);
}

.game-header {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 16px; flex-shrink: 0;
  background: var(--surface); border-bottom: 1px solid var(--border);
  z-index: 20;
}

.header-logo {
  font-size: 0.92rem; font-weight: 800; color: var(--green);
  letter-spacing: 0.02em; white-space: nowrap;
}

.header-case-pill {
  background: var(--border); color: var(--text);
  border-radius: 50px; padding: 3px 12px;
  font-size: 0.75rem; font-weight: 700; white-space: nowrap;
}

.header-spacer { flex: 1; }

.header-score {
  font-size: 0.82rem; font-weight: 700; color: var(--green);
  white-space: nowrap;
}

/* Progress track */
.progress-track {
  display: flex; justify-content: center; gap: 10px;
  padding: 8px 0; flex-shrink: 0;
  background: var(--surface); border-bottom: 1px solid var(--border);
}

.progress-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border); border: 2px solid var(--border);
  transition: all 0.3s ease;
}
.progress-dot.active   { background: var(--green);  border-color: var(--green); }
.progress-dot.complete { background: var(--green-dim); border-color: var(--green-dim); }

/* Game body */
.game-body {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; gap: 14px;
  padding: 14px 16px 16px;
  overflow-y: auto; min-height: 0;
}

/* ─── Card Scene ─────────────────────────────────────── */

.card-scene {
  perspective: 1200px;
  width: 100%; max-width: 480px; flex-shrink: 0;
}

.card-3d {
  position: relative;
  width: 100%;
  min-height: 280px;
  transform-style: preserve-3d;
  transition: transform 0.72s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-3d.flipped { transform: rotateY(180deg); }

.card-face,
.card-reveal {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius);
  padding: 18px 20px;
  min-height: 280px;
}

/* Card face (document style — light background) */
.card-face {
  background: var(--card-bg);
  border: 1px solid #d8d0b8;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255,255,255,0.1);
  color: var(--card-ink);
  animation: cardEnter 0.5s cubic-bezier(0.34,1.22,0.64,1) both;
}

@keyframes cardEnter {
  from { transform: translateY(-30px) scale(0.95); opacity: 0; }
  to   { transform: translateY(0)     scale(1);    opacity: 1; }
}

/* Card reveal (dark — contrasting "back" of card) */
.card-reveal {
  background: var(--surface);
  border: 1.5px solid var(--green-dim);
  box-shadow: var(--shadow-lg), 0 0 24px rgba(0,200,150,0.12);
  transform: rotateY(180deg);
  color: var(--text);
}

/* Card interior elements */
.card-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px; padding-bottom: 10px;
  border-bottom: 2px solid;
}
.card-face .card-header { border-color: #d8d0b8; }
.card-reveal .card-header { border-color: var(--border); }

.card-case-num {
  font-size: 0.65rem; font-weight: 800; letter-spacing: 0.2em;
  text-transform: uppercase;
}
.card-face .card-case-num    { color: #7a6f5a; }
.card-reveal .card-case-num  { color: var(--dim); }

.card-category {
  font-size: 0.78rem; font-weight: 700;
  background: rgba(0,200,150,0.12); color: var(--green-dim);
  border: 1px solid rgba(0,150,110,0.3);
  border-radius: 50px; padding: 2px 10px;
}
.card-face .card-category { background: rgba(0,0,0,0.06); color: #555; border-color: #ccc; }

/* Decision block */
.card-decision-block {
  background: rgba(0,0,0,0.04); border-left: 3px solid;
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 10px 14px; margin-bottom: 14px;
}
.card-face .card-decision-block { border-color: var(--card-ink); }

.card-decision-label {
  font-size: 0.6rem; font-weight: 800; letter-spacing: 0.15em;
  text-transform: uppercase; margin-bottom: 4px;
  color: var(--card-dim);
}

.card-decision-verdict {
  font-size: 1.1rem; font-weight: 900; font-family: 'Courier New', monospace;
  letter-spacing: 0.05em; margin-bottom: 4px;
}
.card-face .card-decision-verdict.rejected { color: #c53030; }
.card-face .card-decision-verdict.denied   { color: #c53030; }
.card-face .card-decision-verdict.waitlisted { color: #b45309; }
.card-face .card-decision-verdict.removed  { color: #c53030; }
.card-face .card-decision-verdict.standard { color: #b45309; }

.card-decision-detail {
  font-size: 0.8rem; color: var(--card-dim);
  font-family: 'Courier New', monospace;
}

.card-section-label {
  font-size: 0.62rem; font-weight: 800; letter-spacing: 0.12em;
  text-transform: uppercase; margin-bottom: 6px; margin-top: 12px;
}
.card-face .card-section-label { color: var(--card-dim); }
.card-reveal .card-section-label { color: var(--dim); }
.card-reveal .reveal-section    { color: var(--green); }

.card-reasoning {
  font-size: 0.85rem; line-height: 1.55;
  font-style: italic; color: var(--card-ink);
  margin-bottom: 4px;
}

.card-facts {
  list-style: none; display: flex; flex-direction: column; gap: 4px;
}
.card-facts li {
  font-size: 0.82rem; color: var(--card-ink); padding-left: 18px; position: relative;
}
.card-facts li::before {
  content: '✓'; position: absolute; left: 0;
  color: #2e7d52; font-weight: 800; font-size: 0.75rem;
}

/* Reveal card elements */
.card-verdict-badge {
  font-size: 0.72rem; font-weight: 900; letter-spacing: 0.15em;
  text-transform: uppercase; padding: 3px 10px; border-radius: 50px;
  border: 2px solid;
}
.card-verdict-badge.unfair { color: var(--danger); border-color: var(--danger); }
.card-verdict-badge.fair   { color: var(--fair);   border-color: var(--fair); }

.card-hidden-facts {
  list-style: none; display: flex; flex-direction: column; gap: 8px;
  margin-bottom: 14px;
}
.card-hidden-facts li {
  font-size: 0.83rem; color: var(--text); padding-left: 22px; position: relative;
  line-height: 1.45;
}
.card-hidden-facts li::before {
  content: '🔓'; position: absolute; left: 0; font-size: 0.75rem;
}

.bias-type-chip {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,200,150,0.1); border: 1px solid var(--green-dim);
  border-radius: 50px; padding: 5px 14px;
}
.bias-type-label {
  font-size: 0.6rem; font-weight: 700; letter-spacing: 0.12em;
  color: var(--green-dim); text-transform: uppercase;
}
.bias-type-name {
  font-size: 0.82rem; font-weight: 800; color: var(--green);
}

/* ─── Design-a-Rule panel ─────────────────────────── */

.design-rule-panel {
  width: 100%; max-width: 540px;
  background: var(--surface); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 20px;
  display: flex; flex-direction: column; gap: 14px;
}
.design-rule-panel.hidden { display: none; }

.design-rule-badge {
  font-size: 0.65rem; font-weight: 800; letter-spacing: 0.2em;
  color: var(--green); text-transform: uppercase;
}
.design-rule-title {
  font-size: clamp(1.2rem, 4vw, 1.5rem); font-weight: 900; color: var(--text);
}
.design-rule-prompt {
  font-size: 0.88rem; color: var(--dim); line-height: 1.6;
}
.design-rule-prompt strong { color: var(--text); }

.bias-recap-strip {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.recap-chip {
  font-size: 0.7rem; font-weight: 700; padding: 4px 10px;
  border-radius: 50px; border: 1px solid;
}

.design-choices {
  display: flex; flex-direction: column; gap: 8px;
}

/* ─── Vote Area ──────────────────────────────────── */

.vote-area {
  width: 100%; max-width: 540px;
  display: flex; flex-direction: column; gap: 12px;
}

.vote-phase { display: flex; flex-direction: column; gap: 10px; }

.vote-prompt {
  font-size: 0.82rem; font-weight: 700; color: var(--dim);
  text-align: center; text-transform: uppercase; letter-spacing: 0.08em;
}

/* Extra fact panel (Need More Info reveal) */
.extra-fact-panel {
  background: rgba(245,158,11,0.1); border: 1.5px solid rgba(245,158,11,0.4);
  border-radius: var(--radius); padding: 12px 16px;
  display: flex; align-items: flex-start; gap: 10px;
  animation: slideDown 0.35s ease both;
}
.extra-fact-panel.hidden { display: none; }

@keyframes slideDown {
  from { transform: translateY(-10px); opacity: 0; }
  to   { transform: translateY(0);     opacity: 1; }
}

.extra-fact-icon { font-size: 1.2rem; flex-shrink: 0; }
.extra-fact-text { font-size: 0.85rem; color: var(--text); line-height: 1.5; }

/* Vote buttons */
.vote-buttons {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

.vote-btn {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 14px 8px; border-radius: var(--radius);
  border: 2px solid; cursor: pointer;
  transition: all 0.15s ease; min-height: 72px;
  font-family: inherit; font-weight: 800;
  font-size: 0.7rem; letter-spacing: 0.05em;
}

.vote-btn.fair    { background: rgba(16,185,129,0.1); border-color: var(--fair);   color: var(--fair); }
.vote-btn.unfair  { background: rgba(239,68,68,0.1);  border-color: var(--danger); color: var(--danger); }
.vote-btn.needmore{ background: rgba(245,158,11,0.1); border-color: var(--amber);  color: var(--amber); }

.vote-btn:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}
.vote-btn.fair:hover:not(:disabled)     { background: rgba(16,185,129,0.2); }
.vote-btn.unfair:hover:not(:disabled)   { background: rgba(239,68,68,0.2); }
.vote-btn.needmore:hover:not(:disabled) { background: rgba(245,158,11,0.2); }

.vote-btn:disabled { opacity: 0.3; cursor: not-allowed; pointer-events: none; }

.vote-btn.selected-correct { background: rgba(16,185,129,0.25); border-color: var(--fair); transform: scale(1.04); }
.vote-btn.selected-wrong   { animation: btnShake 0.35s ease; }

@keyframes btnShake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-8px); }
  40%       { transform: translateX(8px); }
  60%       { transform: translateX(-5px); }
  80%       { transform: translateX(4px); }
}

.vote-icon  { font-size: 1.5rem; }
.vote-label { font-size: 0.68rem; }

.vote-feedback {
  font-size: 0.82rem; color: var(--dim); text-align: center; min-height: 1.4em;
}

/* ─── Board Vote panel ──────────────────────────── */

.board-phase { display: flex; flex-direction: column; gap: 10px; align-items: center; }
.board-phase.hidden { display: none; }

.board-label {
  font-size: 0.8rem; color: var(--dim); font-weight: 700;
  letter-spacing: 0.05em;
}

.board-members { display: flex; gap: 14px; justify-content: center; }

.board-member {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  opacity: 0; animation: none;
}
.board-member.appear { animation: memberAppear 0.3s ease both; }

@keyframes memberAppear {
  from { transform: translateY(10px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.bm-avatar { font-size: 1.8rem; }
.bm-vote   { font-size: 1.1rem; }
.bm-vote.hidden { visibility: hidden; }

.board-tally {
  font-size: 0.8rem; color: var(--dim); text-align: center;
  padding: 6px 14px; background: var(--surface);
  border-radius: 50px; border: 1px solid var(--border);
}
.board-tally.hidden { display: none; }

/* ─── Discussion phase ──────────────────────────── */

.discuss-phase { display: flex; flex-direction: column; gap: 12px; }
.discuss-phase.hidden { display: none; }

.explain-box {
  background: var(--surface); border: 1px solid var(--border);
  border-left: 3px solid var(--green); border-radius: var(--radius);
  padding: 12px 16px;
  animation: slideDown 0.4s ease both;
}

.explain-text {
  font-size: 0.84rem; color: var(--text); line-height: 1.6;
}

.discuss-prompt-label {
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.1em;
  color: var(--amber); text-transform: uppercase;
}

.discuss-prompt-text {
  font-size: 0.9rem; color: var(--text); line-height: 1.5;
}

.discuss-choices {
  display: flex; flex-direction: column; gap: 8px;
}

/* Shared choice card style */
.choice-card {
  background: var(--surface); border: 2px solid var(--border);
  border-radius: var(--radius); padding: 12px 16px;
  cursor: pointer; transition: all 0.15s ease;
  text-align: left; width: 100%; font-family: inherit;
  color: var(--text); font-size: 0.85rem; line-height: 1.45;
}
.choice-card:hover:not(:disabled) {
  border-color: var(--green); background: var(--surface2);
  transform: translateY(-1px);
}
.choice-card.correct { border-color: var(--fair);   background: rgba(16,185,129,0.1); }
.choice-card.partial { border-color: var(--amber);  background: rgba(245,158,11,0.1); }
.choice-card.wrong   {
  border-color: var(--danger); background: rgba(239,68,68,0.07);
  animation: btnShake 0.35s ease;
}
.choice-card:disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }

.discuss-feedback {
  font-size: 0.82rem; color: var(--dim); min-height: 1.4em;
}

.btn-next {
  background: var(--green); color: #000;
  border: none; border-radius: 50px;
  padding: 12px 32px; font-size: 0.95rem; font-weight: 800;
  font-family: inherit; cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 4px 16px rgba(0,200,150,0.3);
  align-self: center; min-height: 48px;
}
.btn-next:hover { background: #00daa6; transform: translateY(-2px); }
.btn-next.hidden { display: none; }

/* ═══════════════════════════════════════════════════════
   RESULTS SCREEN
════════════════════════════════════════════════════════ */

#screen-results {
  background: var(--bg); align-items: center; justify-content: center;
}

#confetti-stage {
  position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden;
}

.confetti-bit {
  position: absolute; top: -20px; border-radius: 3px;
  animation: confettiFall linear forwards;
}

@keyframes confettiFall {
  0%   { transform: translateY(-30px) rotate(0deg); opacity: 1; }
  85%  { opacity: 1; }
  100% { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

.results-inner {
  display: flex; flex-direction: column; align-items: center; gap: 18px;
  text-align: center; max-width: 500px; width: 100%; padding: 32px 20px;
  position: relative; z-index: 1;
}

.results-badge {
  font-size: 4rem;
  animation: sealPop 0.6s cubic-bezier(0.34,1.56,0.64,1) both;
}

.results-title    { font-size: clamp(1.8rem,6vw,2.5rem); font-weight: 900; color: var(--text); }
.results-subtitle { font-size: 1rem; color: var(--dim); }
.results-subtitle strong { color: var(--green); }

.results-score-box {
  background: var(--surface); border: 1.5px solid var(--green);
  border-radius: var(--radius); padding: 16px 32px;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  box-shadow: 0 0 24px rgba(0,200,150,0.15);
}
.results-stars { font-size: 2.2rem; letter-spacing: 8px; }
.results-pts   { font-size: 1.1rem; font-weight: 700; color: var(--green); }

.bias-types-learned {
  display: flex; flex-direction: column; gap: 8px; width: 100%; text-align: left;
}
.bias-learned-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 14px;
  display: flex; align-items: flex-start; gap: 10px;
}
.bli-icon  { font-size: 1.2rem; flex-shrink: 0; }
.bli-name  { font-size: 0.88rem; font-weight: 700; color: var(--text); margin-bottom: 2px; }
.bli-def   { font-size: 0.76rem; color: var(--dim); line-height: 1.4; }

.results-lesson {
  background: var(--surface); border: 1px solid var(--border);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius); padding: 14px 16px;
  display: flex; gap: 12px; align-items: flex-start; text-align: left;
}
.lesson-icon { font-size: 1.4rem; flex-shrink: 0; }
.lesson-body { font-size: 0.86rem; color: var(--text); line-height: 1.6; }

/* ═══════════════════════════════════════════════════════
   SHARED BUTTONS
════════════════════════════════════════════════════════ */

.btn-primary {
  background: var(--green); color: #000;
  border: none; border-radius: 50px;
  padding: 14px 40px;
  font-size: clamp(0.95rem, 3vw, 1.1rem);
  font-weight: 800; font-family: inherit;
  cursor: pointer; transition: all 0.15s ease;
  box-shadow: 0 4px 16px rgba(0,200,150,0.35);
  min-height: 52px;
}
.btn-primary:hover  { background: #00daa6; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,200,150,0.45); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible { outline: 3px solid #00daa6; outline-offset: 4px; }

.mute-btn {
  position: fixed; top: 12px; right: 14px; z-index: 9999;
  width: 38px; height: 38px; border-radius: 50%; border: none;
  background: rgba(255,255,255,0.1); backdrop-filter: blur(8px);
  color: var(--text); font-size: 1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.12s ease;
}
.mute-btn:hover { transform: scale(1.12); }

#screen-game .mute-btn { position: static; background: transparent; }

/* ═══════════════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════════════════ */

@media (max-width: 480px) {
  .vote-buttons { grid-template-columns: 1fr; }
  .vote-btn     { flex-direction: row; justify-content: center; gap: 10px; min-height: 52px; }
  .intro-steps  { flex-direction: column; }
  .step-arrow   { transform: rotate(90deg); }
}

@media (max-width: 360px) {
  .card-face, .card-reveal { padding: 14px 14px; }
  .game-body { padding: 10px 10px 12px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}