/* style.css — Banana to Scale game styles */

/* ============================================================
   Custom Properties
   ============================================================ */
:root {
  --banana-yellow: #ffd700;
  --banana-amber: #ffc107;
  --banana-dark: #b8860b;
  --banana-brown: #4a2c0a;
  --bg-cream: #fffdf0;
  --bg-card: #ffffff;
  --text-dark: #2c1810;
  --text-medium: #5a3825;
  --text-light: #8c6040;
  --accent-green: #2e7d32;
  --accent-blue: #1565c0;
  --danger: #c62828;
  --success: #2e7d32;
  --border: #e8d5a3;
  --shadow: rgba(74, 44, 10, 0.12);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition: 0.25s ease;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-cream);
  color: var(--text-dark);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

/* ============================================================
   Screen System
   ============================================================ */
.screen {
  display: none;
  width: 100%;
  max-width: 620px;
  min-height: 100dvh;
  padding: 16px;
  animation: fadeIn 0.3s ease;
}

.screen.active { display: flex; flex-direction: column; }

.screen-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 8px 0 32px;
  width: 100%;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Start Screen
   ============================================================ */
#screen-start {
  background: linear-gradient(160deg, #fff9e0 0%, #fffdf5 60%, #f0f8ff 100%);
  align-items: center;
  justify-content: center;
  text-align: center;
}

.title-logo {
  font-size: clamp(4rem, 14vw, 6rem);
  line-height: 1;
  animation: bounce 2.5s ease-in-out infinite;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.15));
}

@keyframes bounce {
  0%, 100% { transform: translateY(0) rotate(-5deg); }
  50%       { transform: translateY(-14px) rotate(5deg); }
}

.title-main {
  font-size: clamp(2rem, 8vw, 3.2rem);
  font-weight: 900;
  letter-spacing: -0.5px;
  line-height: 1.05;
  color: var(--banana-brown);
  text-shadow: 2px 2px 0 var(--banana-yellow);
}

.title-sub {
  font-size: clamp(1.6rem, 6vw, 2.6rem);
  color: var(--banana-dark);
}

.title-tagline {
  font-size: 0.85rem;
  color: var(--text-light);
  font-style: italic;
  letter-spacing: 0.3px;
  max-width: 300px;
}

.start-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 340px;
  margin-top: 8px;
}

.start-secondary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.banana-fact-ticker {
  background: rgba(255, 215, 0, 0.2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 0.82rem;
  color: var(--text-medium);
  font-style: italic;
  max-width: 360px;
  text-align: center;
  line-height: 1.5;
  min-height: 64px;
  transition: opacity 0.4s;
}

.total-points-display {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: -6px;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 13px 24px;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  text-decoration: none;
  white-space: nowrap;
  min-height: 48px;
}

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

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--banana-yellow);
  color: var(--banana-brown);
  border-color: var(--banana-dark);
  box-shadow: 0 4px 0 var(--banana-dark), 0 6px 16px rgba(180,134,11,0.25);
}
.btn-primary:hover { background: #ffe033; transform: translateY(-2px); box-shadow: 0 6px 0 var(--banana-dark), 0 8px 20px rgba(180,134,11,0.3); }

.btn-secondary {
  background: #fff;
  color: var(--banana-brown);
  border-color: var(--border);
  box-shadow: 0 3px 0 var(--border), 0 4px 12px var(--shadow);
}
.btn-secondary:hover { background: #fffae8; transform: translateY(-2px); }

.btn-accent {
  background: linear-gradient(135deg, #43a047, #2e7d32);
  color: #fff;
  border-color: #1b5e20;
  box-shadow: 0 4px 0 #1b5e20, 0 6px 16px rgba(46,125,50,0.25);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 6px 0 #1b5e20, 0 8px 20px rgba(46,125,50,0.3); }

.btn-ghost {
  background: transparent;
  color: var(--text-medium);
  border-color: var(--border);
}
.btn-ghost:hover { background: rgba(255, 215, 0, 0.15); color: var(--banana-brown); }

.btn-large { padding: 15px 28px; font-size: 1.08rem; }
.btn-xlarge { padding: 17px 32px; font-size: 1.15rem; width: 100%; max-width: 340px; margin-top: 4px; }
.btn-small { padding: 8px 16px; font-size: 0.85rem; }

.btn-done { opacity: 0.7; }

.btn-back {
  align-self: flex-start;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-medium);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 8px 0;
  margin-bottom: 4px;
}
.btn-back:hover { color: var(--banana-brown); }

/* ============================================================
   How to Play
   ============================================================ */
#screen-how-to-play { background: var(--bg-cream); }
#screen-how-to-play h2 { font-size: 1.8rem; color: var(--banana-brown); }

.how-to-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
}

.how-to-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.how-to-section h3 { font-size: 1rem; color: var(--banana-brown); margin-bottom: 8px; }
.how-to-section p, .how-to-section li { font-size: 0.92rem; color: var(--text-medium); line-height: 1.6; }
.how-to-section ul { padding-left: 18px; display: flex; flex-direction: column; gap: 4px; }

.score-guide { display: flex; flex-direction: column; gap: 6px; margin-top: 8px; }

.score-row {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
}
.score-row.perfect   { background: #e8f5e9; color: #1b5e20; }
.score-row.excellent { background: #e3f2fd; color: #0d47a1; }
.score-row.great     { background: #f3e5f5; color: #4a148c; }
.score-row.good      { background: #fff8e1; color: #e65100; }
.score-row.close     { background: #fbe9e7; color: #bf360c; }
.score-row.wayoff    { background: #ffebee; color: #b71c1c; }

/* ============================================================
   Game Screen
   ============================================================ */
#screen-game {
  display: none;
  flex-direction: column;
  padding: 0;
  background: var(--bg-cream);
}
#screen-game.active { display: flex; }

.game-header {
  background: var(--banana-brown);
  color: #fff;
  padding: 12px 16px 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.game-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.round-display { font-size: 0.9rem; opacity: 0.85; }
.score-display { font-size: 1rem; font-weight: 800; color: var(--banana-yellow); }

.round-progress-track {
  height: 4px;
  background: rgba(255,255,255,0.2);
  border-radius: 2px;
  overflow: hidden;
}
#round-progress-bar {
  height: 100%;
  background: var(--banana-yellow);
  border-radius: 2px;
  transition: width 0.4s ease;
}

/* Timer */
.timer-container {
  display: flex;
  align-items: center;
  gap: 8px;
}
.timer-track {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.2);
  border-radius: 4px;
  overflow: hidden;
}
#timer-bar {
  height: 100%;
  width: 100%;
  border-radius: 4px;
  transition: width 0.9s linear, background-color 0.3s;
}
.timer-text { font-size: 1.1rem; font-weight: 800; min-width: 24px; text-align: right; }

/* Object display */
.game-content {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}

.object-display {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px 24px 20px;
  text-align: center;
  width: 100%;
  box-shadow: 0 4px 16px var(--shadow);
}

.object-emoji {
  font-size: clamp(3.5rem, 15vw, 5rem);
  line-height: 1.1;
  display: block;
  animation: objectPop 0.4s ease;
}

@keyframes objectPop {
  0%   { transform: scale(0.5); opacity: 0; }
  70%  { transform: scale(1.08); }
  100% { transform: scale(1); opacity: 1; }
}

.object-name {
  font-size: clamp(1.2rem, 5vw, 1.6rem);
  font-weight: 800;
  color: var(--banana-brown);
  margin-top: 10px;
}

.object-category {
  font-size: 0.78rem;
  color: var(--text-light);
  margin-top: 4px;
  letter-spacing: 0.2px;
}

.object-dimension {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-medium);
  margin-top: 10px;
  background: rgba(255, 215, 0, 0.18);
  display: inline-block;
  padding: 5px 14px;
  border-radius: 20px;
}

/* Announcer box */
.announcer-box {
  font-size: 0.88rem;
  font-style: italic;
  color: var(--text-light);
  text-align: center;
  min-height: 24px;
}

/* Guess section */
.guess-section {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 20px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 4px 16px var(--shadow);
}

.banana-unit-label {
  font-size: 0.9rem;
  color: var(--text-medium);
  font-weight: 600;
  text-align: center;
}

.banana-visual {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  justify-content: center;
  align-items: center;
  min-height: 42px;
  background: rgba(255, 215, 0, 0.08);
  border-radius: var(--radius-md);
  padding: 8px;
}

.banana-icon { font-size: 1.5rem; transition: transform 0.15s; display: inline-block; }
.banana-mult { font-size: 1.2rem; font-weight: 700; color: var(--banana-dark); }
.banana-partial-label { font-size: 0.78rem; color: var(--text-light); margin-left: 4px; }

/* Current guess display */
.guess-count-display {
  text-align: center;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--banana-brown);
}

#guess-display { color: var(--banana-dark); }

/* Slider */
.slider-container {
  display: flex;
  align-items: center;
  gap: 8px;
}

.slider-label {
  font-size: 0.72rem;
  color: var(--text-light);
  white-space: nowrap;
  min-width: 48px;
  text-align: center;
}

.banana-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(to right, var(--banana-yellow) 0%, var(--banana-amber) 50%, #ff9800 100%);
  outline: none;
  cursor: pointer;
}

.banana-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--banana-brown);
  border: 3px solid var(--banana-yellow);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  transition: transform 0.1s;
}
.banana-slider::-webkit-slider-thumb:hover { transform: scale(1.15); }
.banana-slider::-moz-range-thumb {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--banana-brown);
  border: 3px solid var(--banana-yellow);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

/* Number input */
.number-input-container { display: flex; flex-direction: column; gap: 6px; }
.number-input-container label { font-size: 0.82rem; color: var(--text-light); }

.number-input-wrapper { display: flex; align-items: center; gap: 8px; }

.guess-number-input {
  flex: 1;
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--banana-brown);
  background: #fffdf0;
  outline: none;
  max-width: 160px;
}
.guess-number-input:focus { border-color: var(--banana-dark); }

.unit-label {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* Banana size reference */
.banana-ref {
  font-size: 0.75rem;
  color: var(--text-light);
  text-align: center;
  padding-top: 4px;
  border-top: 1px dashed var(--border);
}

/* ============================================================
   Result Screen
   ============================================================ */
#screen-result { background: var(--bg-cream); align-items: center; }

.result-header {
  width: 100%;
  text-align: center;
  padding: 22px 24px;
  border-radius: var(--radius-xl);
  margin-top: 8px;
  animation: resultPop 0.4s ease;
}

@keyframes resultPop {
  0%   { transform: scale(0.7); opacity: 0; }
  70%  { transform: scale(1.06); }
  100% { transform: scale(1);   opacity: 1; }
}

.result-header.perfect   { background: linear-gradient(135deg, #e8f5e9, #c8e6c9); border: 2px solid #4caf50; }
.result-header.excellent { background: linear-gradient(135deg, #e3f2fd, #bbdefb); border: 2px solid #2196f3; }
.result-header.great     { background: linear-gradient(135deg, #f3e5f5, #e1bee7); border: 2px solid #9c27b0; }
.result-header.good      { background: linear-gradient(135deg, #fff8e1, #ffecb3); border: 2px solid #ffc107; }
.result-header.close     { background: linear-gradient(135deg, #fbe9e7, #ffccbc); border: 2px solid #ff5722; }
.result-header.wayoff    { background: linear-gradient(135deg, #ffebee, #ffcdd2); border: 2px solid #f44336; }

.result-rating {
  font-size: clamp(1.5rem, 7vw, 2.2rem);
  font-weight: 900;
  color: var(--text-dark);
}

.result-points {
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: 6px;
  color: var(--banana-dark);
}

.result-header.perfect   .result-points { color: #2e7d32; }
.result-header.excellent .result-points { color: #1565c0; }
.result-header.wayoff    .result-points { color: #b71c1c; }

.result-comparison {
  display: flex;
  gap: 12px;
  align-items: center;
  width: 100%;
}

.result-item {
  flex: 1;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  text-align: center;
}

.result-item.correct-answer { border-color: var(--banana-dark); background: #fffde7; }

.result-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.result-value {
  font-size: clamp(1.1rem, 4.5vw, 1.4rem);
  font-weight: 800;
  color: var(--banana-brown);
}

.result-vs {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 600;
}

.result-object-info {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  text-align: center;
}

.result-object-name {
  font-weight: 700;
  color: var(--banana-brown);
  font-size: 1rem;
  margin-bottom: 4px;
}

.result-size-detail {
  font-size: 0.85rem;
  color: var(--text-light);
}

.result-announcer {
  font-style: italic;
  color: var(--text-medium);
  text-align: center;
  font-size: 0.9rem;
  padding: 12px 16px;
  background: rgba(255, 215, 0, 0.12);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border);
  width: 100%;
}

.result-fun-fact {
  font-size: 0.82rem;
  color: var(--text-medium);
  font-style: italic;
  text-align: center;
  line-height: 1.55;
  padding: 10px 14px;
  background: rgba(255, 215, 0, 0.08);
  border-radius: var(--radius-md);
  width: 100%;
}

.result-progress {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ============================================================
   End Screen
   ============================================================ */
#screen-end { background: linear-gradient(160deg, #fff9e0 0%, #fffdf5 100%); align-items: center; text-align: center; }

.end-trophy { font-size: 4.5rem; animation: bounce 2s ease-in-out infinite; }

.end-title {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--banana-brown);
}

.end-score-display {
  background: var(--bg-card);
  border: 3px solid var(--banana-yellow);
  border-radius: var(--radius-xl);
  padding: 22px 32px;
  width: 100%;
  box-shadow: 0 6px 0 var(--banana-dark), 0 8px 24px rgba(180,134,11,0.2);
}

.end-score-label { font-size: 0.85rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 1px; }
.end-score-value { font-size: clamp(2.8rem, 12vw, 4rem); font-weight: 900; color: var(--banana-dark); line-height: 1; }
.end-rank-label { font-size: 1.1rem; font-weight: 700; color: var(--banana-brown); margin-top: 8px; }

.end-stats {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.9rem;
}
.stat-row:last-child { border-bottom: none; }
.stat-label { color: var(--text-light); }
.stat-value { font-weight: 700; color: var(--banana-brown); }

.end-unlock {
  background: linear-gradient(135deg, #fff8e1, #fffde7);
  border: 2px solid var(--banana-yellow);
  border-radius: var(--radius-lg);
  padding: 16px 22px;
  width: 100%;
  text-align: center;
}
.unlock-badge { font-weight: 700; color: var(--banana-dark); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; }
.unlock-name  { font-size: 1.1rem; font-weight: 700; color: var(--banana-brown); margin-top: 6px; }

.end-announcer {
  font-style: italic;
  color: var(--text-medium);
  font-size: 0.9rem;
  padding: 12px;
  text-align: center;
  background: rgba(255,215,0,0.1);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border);
  width: 100%;
}

.end-buttons { display: flex; flex-direction: column; gap: 10px; width: 100%; }

/* ============================================================
   Leaderboard
   ============================================================ */
#screen-leaderboard { background: var(--bg-cream); }
#screen-leaderboard h2 { font-size: 1.8rem; color: var(--banana-brown); }

.leaderboard-subtitle { font-size: 0.88rem; color: var(--text-light); font-style: italic; margin-top: -8px; }

.leaderboard-list {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.leaderboard-entry {
  display: flex;
  gap: 14px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
}

.leaderboard-top {
  border-color: var(--banana-yellow);
  background: linear-gradient(135deg, #fffde7, #fff9c4);
  box-shadow: 0 3px 0 var(--banana-dark), 0 4px 12px rgba(180,134,11,0.15);
}

.leaderboard-pos { font-size: 1.8rem; min-width: 36px; text-align: center; }

.leaderboard-info { flex: 1; }
.leaderboard-score { font-size: 1.2rem; font-weight: 800; color: var(--banana-dark); }
.leaderboard-label { font-size: 0.85rem; color: var(--text-medium); font-weight: 600; }
.leaderboard-meta  { font-size: 0.75rem; color: var(--text-light); margin-top: 2px; }

.leaderboard-empty { color: var(--text-light); font-style: italic; text-align: center; padding: 24px; }

/* ============================================================
   Skins
   ============================================================ */
#screen-skins { background: var(--bg-cream); }
#screen-skins h2 { font-size: 1.8rem; color: var(--banana-brown); }

.skins-subtitle { font-size: 0.88rem; color: var(--text-light); font-style: italic; margin-top: -8px; }

.skins-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
  gap: 12px;
  width: 100%;
}

.skin-card {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 12px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.skin-card.unlocked { cursor: pointer; }
.skin-card.unlocked:hover { transform: translateY(-3px); box-shadow: 0 6px 16px var(--shadow); border-color: var(--banana-amber); }
.skin-card.active { border-color: var(--banana-dark); background: #fffde7; box-shadow: 0 4px 0 var(--banana-dark); }
.skin-card.locked { opacity: 0.55; }

.skin-emoji { font-size: 2.4rem; display: block; }
.skin-name  { font-weight: 700; font-size: 0.88rem; color: var(--banana-brown); }
.skin-desc  { font-size: 0.75rem; color: var(--text-light); line-height: 1.4; }
.skin-status { font-size: 0.78rem; font-weight: 600; color: var(--accent-green); margin-top: 4px; }
.skin-lock   { font-size: 0.75rem; color: var(--text-light); margin-top: 4px; }

.skins-hint {
  font-size: 0.82rem;
  color: var(--text-light);
  font-style: italic;
  text-align: center;
  padding: 8px;
}

/* ============================================================
   Banana Skin CSS Effects
   ============================================================ */
.skin-golden { filter: sepia(1) saturate(3) hue-rotate(5deg) brightness(1.15); }
.skin-frozen { filter: hue-rotate(180deg) saturate(0.5) brightness(1.2); }
.skin-pixel  { image-rendering: pixelated; filter: contrast(1.3) saturate(0.8); }
.skin-lab    { filter: brightness(1.1) contrast(1.1); }
.skin-rainbow { animation: rainbow-hue 2s linear infinite; }
@keyframes rainbow-hue { from { filter: hue-rotate(0deg); } to { filter: hue-rotate(360deg); } }

/* ============================================================
   Fact Overlay
   ============================================================ */
.fact-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.fact-overlay.hidden { display: none; }

.fact-content {
  background: var(--bg-card);
  border: 3px solid var(--banana-yellow);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  max-width: 420px;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
  animation: factPop 0.35s ease;
}

@keyframes factPop {
  0%   { transform: scale(0.75); opacity: 0; }
  75%  { transform: scale(1.03); }
  100% { transform: scale(1); opacity: 1; }
}

.fact-icon   { font-size: 2.5rem; }
.fact-title  { font-size: 0.8rem; font-weight: 700; color: var(--text-light); text-transform: uppercase; letter-spacing: 1.5px; }
.fact-text   { font-size: 1rem; color: var(--text-dark); font-style: italic; line-height: 1.6; font-weight: 500; }
.fact-source { font-size: 0.75rem; color: var(--text-light); font-style: italic; }

/* ============================================================
   Audio Controls (fixed corner)
   ============================================================ */
.audio-controls {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 50;
}

.btn-icon {
  background: rgba(255,255,255,0.85);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px var(--shadow);
  backdrop-filter: blur(4px);
  transition: transform var(--transition);
}
.btn-icon:hover { transform: scale(1.1); }

/* ============================================================
   Responsive / Mobile
   ============================================================ */
@media (max-width: 420px) {
  .screen { padding: 12px; }
  .start-buttons { max-width: 100%; }
  .skins-grid { grid-template-columns: repeat(2, 1fr); }
  .result-comparison { flex-direction: column; }
  .result-vs { display: none; }
  .btn-xlarge { font-size: 1rem; }
  .fact-content { padding: 20px 16px; }
}

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