/* ==========================================================================
   UP OR DOWN — GLOBAL STREAK CHALLENGE STYLES
   ========================================================================== */

:root {
  --bg-dark: #0b0f19;
  --bg-card-left: #111827;
  --bg-card-right: #161f33;
  --border-subtle: rgba(255, 255, 255, 0.1);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent-gold: #fbbf24;
  --accent-up: #10b981;
  --accent-up-hover: #059669;
  --accent-down: #f43f5e;
  --accent-down-hover: #e11d48;
  --accent-primary: #6366f1;
  --font-display: 'Outfit', 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
}

/* ==========================================================================
   TOP HUD BAR
   ========================================================================== */
.hud-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 68px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 40;
  background: linear-gradient(180deg, rgba(11, 15, 25, 0.9) 0%, rgba(11, 15, 25, 0) 100%);
  pointer-events: none;
}

.hud-left, .hud-center, .hud-right {
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
}

.hud-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--text-main);
  padding: 8px 14px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.2s ease, background 0.2s ease;
}

.hud-pill:hover {
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(30, 41, 59, 0.95);
  transform: translateY(-1px);
}

.chevron {
  font-size: 0.75rem;
  opacity: 0.7;
}

.score-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 78px;
  padding: 5px 14px;
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.streak-badge {
  border-color: rgba(251, 191, 36, 0.4);
  box-shadow: 0 0 20px rgba(251, 191, 36, 0.12);
}

.score-label {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
  white-space: nowrap;
}

.score-val {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 900;
  line-height: 1.1;
}

.streak-badge .score-val {
  color: var(--accent-gold);
}

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  color: var(--text-main);
  font-size: 1rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.15s ease;
}

.icon-btn:hover {
  border-color: rgba(255, 255, 255, 0.35);
  transform: scale(1.05);
}

.lang-switcher {
  display: flex;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  padding: 3px;
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.75rem;
  padding: 5px 9px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.lang-btn:hover {
  color: var(--text-main);
}

.lang-btn.active {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.45);
}

/* ==========================================================================
   THEME SHIFT TOAST BANNER
   ========================================================================== */
.theme-shift-banner {
  position: fixed;
  top: 78px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 45;
  background: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
  color: #fff;
  padding: 8px 22px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: 0 8px 25px rgba(236, 72, 153, 0.45);
  animation: popBounce 0.45s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* ==========================================================================
   MAIN SPLIT ARENA
   ========================================================================== */
.arena {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: row;
}

.card {
  position: relative;
  flex: 1;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 32px 48px;
  overflow: hidden;
  transition: background 0.4s ease;
}

.card-left {
  background: radial-gradient(circle at 35% 35%, #1e293b 0%, #0f172a 75%);
  border-right: 1px solid var(--border-subtle);
}

.card-right {
  background: radial-gradient(circle at 65% 35%, #1e1b4b 0%, #0f172a 75%);
}

.card-bg-photo {
  position: absolute;
  inset: -24px;
  background-size: cover;
  background-position: center;
  filter: blur(24px) saturate(1.25) brightness(0.3);
  transform: scale(1.08);
  pointer-events: none;
  transition: background-image 0.45s ease, opacity 0.4s ease;
  z-index: 0;
}

.card-bg-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(11, 15, 25, 0.25) 0%, rgba(11, 15, 25, 0.82) 100%);
}

.card-bg-glow {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(95px);
  opacity: 0.18;
  pointer-events: none;
  transition: background 0.5s ease;
  z-index: 1;
}

.card-content {
  position: relative;
  z-index: 2;
  max-width: 460px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
}

.metric-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #e2e8f0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.item-visual {
  position: relative;
  width: clamp(240px, 28vw, 330px);
  height: clamp(155px, 20vh, 210px);
  border-radius: 22px;
  background: rgba(15, 23, 42, 0.75);
  border: 2px solid rgba(255, 255, 255, 0.22);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.6);
  overflow: visible;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), border-color 0.25s ease;
}

/* Hover lift only for real pointers: on touch screens :hover sticks after a tap */
@media (hover: hover) {
  .card:hover .item-visual {
    transform: translateY(-4px) scale(1.02);
    border-color: rgba(255, 255, 255, 0.42);
  }
}

.item-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: 20px;
  display: block;
  background: #1e293b;
  transition: opacity 0.25s ease;
}

/* Logos and screenshots (imageFit: "contain" in data.js) are shown whole instead of cropped,
   on a light plate: most logos are drawn for white backgrounds and vanish on the dark card */
.item-photo.fit-contain {
  object-fit: contain;
  padding: 12px;
  background: #f1f5f9;
}

.item-emoji {
  position: absolute;
  bottom: -10px;
  right: -10px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.92);
  border: 2px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.55);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  line-height: 1;
}

/* Image credit badge: links to the file page (author · license in its tooltip/label) */
.photo-credit {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(15, 23, 42, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #e2e8f0;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 0.75rem;
  font-style: italic;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  opacity: 0.75;
  transition: opacity 0.15s ease;
}

.photo-credit:hover,
.photo-credit:focus-visible {
  opacity: 1;
}

.item-title {
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  font-weight: 800;
  line-height: 1.25;
  color: #ffffff;
  text-wrap: balance;
}

.value-box {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.item-value {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4vw, 3.3rem);
  font-weight: 900;
  color: var(--accent-gold);
  text-shadow: 0 4px 24px rgba(251, 191, 36, 0.35);
  letter-spacing: -0.02em;
}

.fact-card {
  margin-top: 4px;
  width: 100%;
  max-width: 440px;
  background: rgba(15, 23, 42, 0.78);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  padding: 12px 14px;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
  animation: fadeIn 0.28s ease;
}

.fact-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.fact-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.68rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(99, 102, 241, 0.25);
  border: 1px solid rgba(99, 102, 241, 0.45);
  color: #c7d2fe;
  letter-spacing: 0.02em;
}

.fact-badge.basis {
  background: rgba(16, 185, 129, 0.2);
  border-color: rgba(16, 185, 129, 0.4);
  color: #a7f3d0;
}

.fact-text {
  font-size: 0.85rem;
  line-height: 1.48;
  color: #f1f5f9;
  max-height: 76px;
  overflow-y: auto;
  user-select: text;
}

.fact-text.sub {
  font-size: 0.78rem;
  color: #cbd5e1;
}

.fact-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.73rem;
}

.source-tag {
  color: #94a3b8;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.source-link {
  color: var(--accent-gold);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.15s ease;
}

.source-link:hover {
  text-decoration: underline;
  opacity: 0.85;
}

.verdict-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.next-round-btn {
  position: relative;
  overflow: hidden;
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: #fff;
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 0.88rem;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(99, 102, 241, 0.45);
  transition: transform 0.15s ease, filter 0.15s ease;
}

.next-round-btn:hover {
  transform: translateY(-2px) scale(1.03);
  filter: brightness(1.08);
}

/* Countdown fill: the next round starts when it is full (duration set from AUTO_ADVANCE_MS in app.js) */
.next-progress {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.28);
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

.next-round-btn.counting .next-progress {
  animation-name: nextCountdown;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

.next-label {
  position: relative;
}

@keyframes nextCountdown {
  to {
    transform: scaleX(1);
  }
}

/* ==========================================================================
   GUESS ACTION BUTTONS (HIGHER / LOWER)
   ========================================================================== */
.guess-actions {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 310px;
}

.guess-btn {
  position: relative;
  width: 100%;
  padding: 14px 22px;
  border-radius: 18px;
  border: 2px solid rgba(255, 255, 255, 0.18);
  color: #fff;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  transition: transform 0.14s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.2s ease, filter 0.15s ease;
}

.btn-higher {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.32);
}

.btn-lower {
  background: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%);
  box-shadow: 0 8px 24px rgba(244, 63, 94, 0.32);
}

.guess-btn:hover {
  transform: translateY(-3px) scale(1.02);
  filter: brightness(1.07);
}

.guess-btn:active {
  transform: translateY(1px) scale(0.98);
}

.btn-arrow {
  font-size: 0.9rem;
  opacity: 0.9;
}

.btn-main-text {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.btn-sub-text {
  font-size: 0.76rem;
  font-weight: 600;
  opacity: 0.85;
}

.verdict-pill {
  padding: 6px 16px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
}

.verdict-pill.win {
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid #10b981;
  color: #34d399;
}

.verdict-pill.lose {
  background: rgba(244, 63, 94, 0.2);
  border: 1px solid #f43f5e;
  color: #fb7185;
}

/* ==========================================================================
   CENTER VS DIVIDER & SKIP BUTTON
   ========================================================================== */
.vs-divider {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 25;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.vs-circle {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: #0f172a;
  border: 3px solid rgba(255, 255, 255, 0.22);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.25rem;
  color: #fff;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.vs-circle.correct {
  background: var(--accent-up);
  border-color: #a7f3d0;
  transform: scale(1.18);
}

.vs-circle.wrong {
  background: var(--accent-down);
  border-color: #fecdd3;
  transform: scale(1.18);
}

.skip-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #e2e8f0;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  transition: all 0.15s ease;
}

.skip-pill:hover:not(:disabled) {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  transform: translateY(-1px);
}

.skip-pill:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ==========================================================================
   BOTTOM KEYBOARD HINT
   ========================================================================== */
.bottom-hint {
  position: fixed;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  font-size: 0.78rem;
  color: rgba(148, 163, 184, 0.7);
  pointer-events: none;
  text-align: center;
  white-space: nowrap;
}

.credits-corner {
  position: fixed;
  right: 16px;
  bottom: 12px;
  z-index: 20;
  font-size: 0.72rem;
  color: rgba(148, 163, 184, 0.7);
  text-decoration: none;
}

.credits-corner:hover {
  color: var(--text-main);
  text-decoration: underline;
}

/* ==========================================================================
   MODALS (THEME SELECTOR & GAME OVER)
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(6, 9, 17, 0.8);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal-panel {
  background: #131c2e;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 24px;
  max-width: 580px;
  width: 100%;
  padding: 26px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.65);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.modal-header h3 {
  font-size: 1.3rem;
  font-weight: 800;
}

.modal-close {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  cursor: pointer;
  font-size: 0.95rem;
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(235px, 1fr));
  gap: 12px;
}

.theme-card-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 16px;
  cursor: pointer;
  text-align: left;
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.15s ease;
}

.theme-card-item:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

.theme-card-item.active {
  background: rgba(99, 102, 241, 0.22);
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.35);
}

.theme-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.theme-card-icon {
  font-size: 1.7rem;
}

.theme-card-best {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--accent-gold);
  background: rgba(251, 191, 36, 0.12);
  padding: 3px 9px;
  border-radius: 999px;
}

.theme-card-title {
  font-size: 1.05rem;
  font-weight: 800;
}

.theme-card-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ==========================================================================
   GAME OVER PANEL
   ========================================================================== */
.gameover-panel {
  max-width: 510px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.gameover-badge {
  align-self: center;
  background: rgba(244, 63, 94, 0.18);
  border: 1px solid rgba(244, 63, 94, 0.45);
  color: #fda4af;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 5px 14px;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

.rank-title {
  font-size: 1.55rem;
  font-weight: 900;
  color: #fff;
}

.rank-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.score-summary {
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 16px;
}

.summary-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.summary-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
}

.summary-num {
  font-family: var(--font-display);
  font-size: 2.3rem;
  font-weight: 900;
}

.summary-num.highlight {
  color: var(--accent-gold);
}

.summary-divider {
  width: 1px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
}

.emoji-history {
  font-size: 1.15rem;
  letter-spacing: 3px;
  line-height: 1.4;
  word-break: break-all;
  background: rgba(255, 255, 255, 0.04);
  padding: 10px 14px;
  border-radius: 12px;
}

.defeated-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 12px 14px;
  text-align: left;
}

.defeated-label {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.defeated-comparison {
  font-size: 0.88rem;
  line-height: 1.5;
  color: #e2e8f0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.defeated-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.defeated-thumb {
  width: 44px;
  height: 34px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
}

.defeated-thumb.fit-contain {
  object-fit: contain;
  padding: 2px;
  background: #f1f5f9;
}

.defeated-body {
  flex: 1;
  min-width: 0;
}

.defeated-year {
  font-weight: 800;
}

.defeated-year.is-left {
  color: #fbbf24;
}

.defeated-year.is-right {
  color: #fb7185;
}

.defeated-source {
  margin-left: 6px;
  font-size: 0.75rem;
}

.defeated-origin {
  margin-top: 2px;
  font-size: 0.78rem;
  color: #cbd5e1;
}

.defeated-basis {
  margin-top: 2px;
  font-size: 0.72rem;
  color: #94a3b8;
}

.defeated-credit {
  display: block;
  margin-top: 2px;
  font-size: 0.68rem;
  color: #94a3b8;
  text-decoration: none;
  word-break: break-word;
}

.defeated-credit:hover {
  color: #e2e8f0;
  text-decoration: underline;
}

.credits-link {
  align-self: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-decoration: none;
}

.credits-link:hover {
  color: var(--text-main);
  text-decoration: underline;
}

.defeated-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: 4px 0;
}

.gameover-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

.action-btn {
  width: 100%;
  padding: 13px 18px;
  border-radius: 14px;
  border: none;
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.action-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.06);
}

.primary-btn {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: #fff;
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
}

.share-btn {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff;
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #e2e8f0;
}

/* ==========================================================================
   ANIMATIONS & UTILITIES
   ========================================================================== */
.hidden {
  display: none !important;
}

.chain-slide {
  animation: slidePromote 0.42s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes slidePromote {
  0% {
    opacity: 0.35;
    transform: translateX(35px) scale(0.96);
  }
  100% {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes popBounce {
  0% { transform: translateX(-50%) scale(0.7); opacity: 0; }
  70% { transform: translateX(-50%) scale(1.06); opacity: 1; }
  100% { transform: translateX(-50%) scale(1); opacity: 1; }
}

/* ==========================================================================
   MOBILE RESPONSIVE (STACKED SPLIT VIEW)
   ========================================================================== */
@media (max-width: 820px) {
  .hud-bar {
    height: 58px;
    padding: 0 12px;
  }

  /* Friend-challenge banner gets its own row under the HUD instead of squeezing the scores */
  .hud-left {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    justify-content: center;
    pointer-events: none;
  }

  .hud-pill {
    padding: 6px 10px;
    font-size: 0.8rem;
  }

  .score-badge {
    min-width: 62px;
    padding: 4px 10px;
  }

  .score-val {
    font-size: 1.1rem;
  }

  .arena {
    flex-direction: column;
  }

  /* 28px bottom keeps the left card's last line clear of the VS circle */
  .card {
    padding: 56px 20px 28px;
  }

  .card-left {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }

  .has-challenge .card-left {
    padding-top: 92px;
  }

  .card-right {
    padding: 28px 20px 36px;
  }

  /* Half-screen cards: scroll instead of clipping when content is taller than the card */
  .card-content {
    gap: 10px;
    max-height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .card-content > * {
    flex-shrink: 0;
  }

  /* The left item's facts were already shown when it was revealed; no room to repeat them */
  .card-left .fact-card {
    display: none;
  }

  /* Once revealed, the photo makes room for the year, verdict and facts */
  .card-right.revealed .item-visual {
    display: none;
  }

  .item-visual {
    width: 195px;
    height: 112px;
    border-radius: 16px;
  }

  .item-photo {
    border-radius: 14px;
  }

  .item-emoji {
    width: 34px;
    height: 34px;
    font-size: 1.15rem;
    bottom: -6px;
    right: -6px;
  }

  .item-title {
    font-size: 1.2rem;
  }

  .item-value {
    font-size: 2rem;
  }

  .value-box {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
  }

  .fact-card {
    padding: 8px 11px;
    gap: 5px;
  }

  .fact-text {
    font-size: 0.78rem;
    max-height: 48px;
  }

  .fact-text.sub {
    font-size: 0.72rem;
  }

  .guess-actions {
    flex-direction: row;
    max-width: 380px;
  }

  .guess-btn {
    padding: 11px 10px;
  }

  .btn-main-text {
    font-size: 0.95rem;
  }

  .vs-divider {
    flex-direction: row;
  }

  .vs-circle {
    width: 48px;
    height: 48px;
    font-size: 0.95rem;
  }

  .bottom-hint,
  .credits-corner {
    display: none;
  }

  .modal-panel {
    padding: 20px 18px;
  }

  .gameover-panel {
    gap: 12px;
  }
}

/* SEO Screen-Reader / Crawler Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Friend Challenge Banner & Quick Share Button */
.challenge-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 13px;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.2);
  border: 1px solid rgba(251, 191, 36, 0.55);
  color: #fde68a;
  font-size: 0.78rem;
  font-weight: 800;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.2);
  animation: fadeIn 0.3s ease;
}

.challenge-pill.beaten {
  background: rgba(16, 185, 129, 0.24);
  border-color: rgba(52, 211, 153, 0.65);
  color: #a7f3d0;
}

.share-top-btn {
  cursor: pointer;
  background: rgba(99, 102, 241, 0.22);
  border: 1px solid rgba(129, 140, 248, 0.45);
  color: #e0e7ff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 12px;
  transition: all 0.18s ease;
}

.share-top-btn:hover {
  background: rgba(99, 102, 241, 0.38);
  transform: translateY(-1px);
}

/* ==========================================================================
   SMALL PHONES (kept last so they override the share button rules above)
   ========================================================================== */
@media (max-width: 480px) {
  .share-top-btn {
    padding: 6px 10px;
  }

  /* Icon-only share button; the label stays readable for screen readers */
  .share-top-btn .share-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
  }

  .hud-center,
  .hud-right {
    gap: 6px;
  }

  .lang-btn {
    padding: 5px 7px;
  }
}

/* Short screens (small phones, in-app browsers with toolbars) */
@media (max-width: 820px) and (max-height: 700px) {
  .item-visual {
    width: 160px;
    height: 90px;
  }

  .item-title {
    font-size: 1.05rem;
  }

  .item-value {
    font-size: 1.7rem;
  }
}