/* ═══════════════════════════════════════════════════════════════════
   Blackjack — CSS
   Self-contained: includes all card styles (no external /css/cards.css).
   ═══════════════════════════════════════════════════════════════════ */

/* ─── DESIGN TOKENS ─── */
:root {
  /* Palette */
  --bg-primary:    #0D1117;
  --bg-secondary:  #161B22;
  --bg-tertiary:   #21262D;
  --text-primary:  #F0F6FC;
  --text-secondary:#8B949E;
  --text-muted:    #484F58;
  --accent:        #3B82F6;
  --border:        #30363D;
  --btn-bg:        #21262D;
  --btn-active:    #30363D;
  --overlay-bg:    rgba(0, 0, 0, 0.85);

  /* Card colours */
  --suit-red:      #DC2626;
  --suit-black:    #e5e5e5;
  --card-front-bg: #f8f8f0;
  --card-front-border: #d0d0c8;
  --card-back-a:   #1a2a6c;
  --card-back-b:   #0f1a4a;
  --card-shadow:   0 2px 8px rgba(0, 0, 0, 0.55), 0 1px 3px rgba(0, 0, 0, 0.35);

  /* Card dimensions */
  --card-w:        58px;
  --card-h:        82px;
  --card-radius:   6px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-primary:    #FFFFFF;
    --bg-secondary:  #F6F8FA;
    --bg-tertiary:   #E9ECF0;
    --text-primary:  #1B1E28;
    --text-secondary:#57606A;
    --text-muted:    #8C959F;
    --accent:        #3182F6;
    --border:        #D0D7DE;
    --btn-bg:        #E9ECF0;
    --btn-active:    #D0D7DE;
    --overlay-bg:    rgba(255, 255, 255, 0.92);

    --suit-black:    #1a1a1a;
    --card-front-bg: #ffffff;
    --card-front-border: #c8c8c8;
    --card-shadow:   0 2px 8px rgba(0, 0, 0, 0.18), 0 1px 3px rgba(0, 0, 0, 0.12);
  }
}

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

html {
  height: 100%;
  font-size: 16px;
  touch-action: manipulation;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Pretendard', 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
  user-select: none;
  -webkit-user-select: none;
}

/* ─── APP SHELL ─── */
#app {
  width: 100%;
  max-width: 480px;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* ═══════════════════════════════════════════════════════════════════
   OVERLAY SCREENS (start, win)
   ═══════════════════════════════════════════════════════════════════ */
.screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--overlay-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 200;
  padding: 28px 24px;
  gap: 28px;
  transition: opacity 0.3s ease;
  opacity: 0;
  pointer-events: none;
}

.screen.active {
  opacity: 1;
  pointer-events: auto;
}

#game-screen {
  position: relative;
  display: none;
  flex-direction: column;
  width: 100%;
  flex: 1;
  min-height: 0;
}

#game-screen.active {
  display: flex;
}

/* ── Start screen ── */
#start-screen {
  gap: 36px;
}

.title-wrap {
  text-align: center;
}

.game-logo-css {
  font-size: 3rem;
  margin-bottom: 8px;
  animation: float 2.4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

.screen-title {
  font-size: clamp(2.6rem, 14vw, 4.5rem);
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent) 0%, #a78bfa 55%, #f472b6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.screen-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Mini preview cards on start screen */
.start-cards-preview {
  display: flex;
  gap: 6px;
  justify-content: center;
}

.preview-card {
  width: 38px;
  height: 53px;
  border-radius: 4px;
  border: 1px solid var(--card-front-border);
  background: var(--card-front-bg);
  box-shadow: var(--card-shadow);
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 3px 4px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--suit-black);
  position: relative;
  overflow: hidden;
}

.preview-card.red {
  color: var(--suit-red);
}

.preview-card .suit-center {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  opacity: 0.18;
}

/* Start button */
.start-btn {
  width: 100%;
  max-width: 300px;
  padding: 16px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #8B5CF6);
  color: #ffffff;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.start-btn:active {
  transform: scale(0.97);
  opacity: 0.9;
}

/* ── Win screen ── */
#win-screen {
  gap: 28px;
}

.win-icon {
  font-size: 4rem;
  animation: winBounce 0.6s ease infinite alternate;
}

@keyframes winBounce {
  from { transform: translateY(0) rotate(-5deg); }
  to   { transform: translateY(-10px) rotate(5deg); }
}

.win-title {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  background: linear-gradient(135deg, #FFD700, #FF8C00);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.win-stats {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  max-width: 300px;
}

.stat-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.stat-value {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.win-actions {
  display: flex;
  gap: 10px;
  width: 100%;
  max-width: 300px;
}

.btn-primary {
  flex: 1;
  padding: 13px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #8B5CF6);
  color: #ffffff;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.btn-primary:active {
  opacity: 0.85;
  transform: scale(0.97);
}

/* ═══════════════════════════════════════════════════════════════════
   GAME HEADER
   ═══════════════════════════════════════════════════════════════════ */
#game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px 10px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-title {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.icon-btn {
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--btn-bg);
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s ease, color 0.15s ease;
}

.icon-btn:hover {
  background: var(--btn-active);
  color: var(--text-primary);
}

.icon-btn:active {
  transform: scale(0.93);
}

/* ═══════════════════════════════════════════════════════════════════
   STATS BAR
   ═══════════════════════════════════════════════════════════════════ */
.stats-bar {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  flex-shrink: 0;
}

.stat-chip {
  flex: 1;
  padding: 8px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: center;
}

.stat-chip-label {
  font-size: 0.64rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 2px;
}

.stat-chip-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.03em;
}

/* ═══════════════════════════════════════════════════════════════════
   CARDS (CSS-only design, self-contained — no external cards.css)
   ═══════════════════════════════════════════════════════════════════ */
.card {
  width: var(--card-w);
  height: var(--card-h);
  border-radius: var(--card-radius);
  position: relative;
  flex-shrink: 0;
  cursor: default;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.card-inner {
  width: 100%;
  height: 100%;
  border-radius: var(--card-radius);
  position: relative;
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

/* Face-down back */
.card.face-down .card-inner {
  background:
    repeating-linear-gradient(60deg, rgba(255,255,255,0.04) 0px, rgba(255,255,255,0.04) 1px, transparent 1px, transparent 9px),
    repeating-linear-gradient(-60deg, rgba(255,255,255,0.04) 0px, rgba(255,255,255,0.04) 1px, transparent 1px, transparent 9px),
    linear-gradient(135deg, var(--card-back-a) 0%, var(--card-back-b) 100%);
  border: 1.5px solid rgba(255, 255, 255, 0.12);
}

.card.face-down .card-inner::before {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: calc(var(--card-radius) - 2px);
  border: 1px solid rgba(255,255,255,0.14);
  background: repeating-linear-gradient(45deg, rgba(255,255,255,0.03) 0px, rgba(255,255,255,0.03) 2px, transparent 2px, transparent 8px);
}

.card.face-down .card-inner::after {
  content: '✦';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: rgba(255,255,255,0.1);
}

.card.face-down .card-face {
  display: none;
}

/* Face-up front */
.card.face-up .card-inner {
  background: var(--card-front-bg);
  border: 1.5px solid var(--card-front-border);
}

.card.suit-red .card-face   { color: var(--suit-red); }
.card.suit-black .card-face { color: var(--suit-black); }

.card-face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--card-radius);
}

.card-corner-tl {
  position: absolute;
  top: 3px;
  left: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}

.card-rank {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.card-suit-corner {
  font-size: 0.6rem;
  line-height: 1;
}

.card-corner-br {
  position: absolute;
  bottom: 3px;
  right: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
  transform: rotate(180deg);
}

.card-suit-center {
  font-size: 1.5rem;
  line-height: 1;
  opacity: 0.9;
}

/* ═══════════════════════════════════════════════════════════════════
   GAME AREA — green felt
   ═══════════════════════════════════════════════════════════════════ */
#game-area {
  flex: 1;
  overflow-y: auto;
  padding: 12px 12px 8px;
  background: linear-gradient(160deg, #0e2a1a 0%, #0b1e12 100%);
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  min-height: 0;
}

@media (prefers-color-scheme: light) {
  #game-area {
    background: linear-gradient(160deg, #2d7a4e 0%, #1f5e37 100%);
  }
  .hand-label { color: rgba(255,255,255,0.75); }
  .hand-score { background: rgba(0,0,0,0.15); color: #fff; }
}

/* ─── Result message ─── */
.result-msg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,0.85);
  color: #fff;
  padding: 16px 32px;
  border-radius: 12px;
  font-size: 1.4rem;
  font-weight: 800;
  z-index: 100;
  text-align: center;
  pointer-events: none;
  transition: opacity 0.3s;
  white-space: nowrap;
}
.result-msg.hidden { opacity: 0; pointer-events: none; }
.result-msg.win     { color: #4ade80; }
.result-msg.lose    { color: #f87171; }
.result-msg.push    { color: #fbbf24; }
.result-msg.blackjack { color: #fbbf24; font-size: 1.6rem; }

/* ─── Hand areas ─── */
.hand-area {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hand-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hand-score {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  background: rgba(255,255,255,0.12);
  padding: 2px 8px;
  border-radius: 4px;
}
.hand-score.bust            { color: #f87171; background: rgba(248,113,113,0.15); }
.hand-score.blackjack-score { color: #fbbf24; }

/* ─── Card row (horizontal, not stacked) ─── */
.card-row {
  display: flex;
  flex-direction: row;
  gap: 6px;
  flex-wrap: wrap;
  min-height: 90px;
  align-items: flex-start;
}

/* ─── Player hands wrap (split support) ─── */
#player-hands-wrap {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.player-hand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.player-hand .hand-label .active-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

/* ─── Hand result badge ─── */
.hand-result-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.hand-result-badge.win       { background: rgba(74,222,128,0.2);  color: #4ade80; }
.hand-result-badge.lose      { background: rgba(248,113,113,0.2); color: #f87171; }
.hand-result-badge.push      { background: rgba(251,191,36,0.2);  color: #fbbf24; }
.hand-result-badge.blackjack { background: rgba(251,191,36,0.25); color: #fbbf24; }
.hand-result-badge.bust      { background: rgba(248,113,113,0.2); color: #f87171; }

/* ═══════════════════════════════════════════════════════════════════
   BOTTOM CONTROL PANELS
   ═══════════════════════════════════════════════════════════════════ */
.bottom-controls-panel {
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom, 0px));
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
}

.bottom-controls-panel.hidden {
  display: none;
}

/* ─── Chip betting row ─── */
.chip-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.chip-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.3);
  font-size: 11px;
  font-weight: 800;
  color: #fff;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s;
  box-shadow: 0 3px 6px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  -webkit-user-select: none;
}

.chip-btn:active {
  transform: scale(0.92);
  box-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

/* Chip colors by value */
.chip-btn[data-val="5"]   { background: #dc2626; }
.chip-btn[data-val="10"]  { background: #2563eb; }
.chip-btn[data-val="25"]  { background: #16a34a; }
.chip-btn[data-val="50"]  { background: #ea580c; }
.chip-btn[data-val="100"] { background: #7c3aed; }
.chip-btn[data-val="500"] { background: #b45309; }

.chip-btn:disabled,
.chip-btn.disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ─── Action row ─── */
.action-row {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.action-row .ctrl-btn {
  flex: 1;
  max-width: 100px;
}

/* ─── Control buttons ─── */
.ctrl-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 8px 4px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: var(--btn-bg);
  color: var(--text-secondary);
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
  -webkit-tap-highlight-color: transparent;
}

.ctrl-btn:hover {
  background: var(--btn-active);
  color: var(--text-primary);
}

.ctrl-btn:active {
  transform: scale(0.94);
}

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

.ctrl-btn-icon {
  font-size: 1.1rem;
  line-height: 1;
}

.ctrl-btn-label {
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ═══════════════════════════════════════════════════════════════════
   SCROLLBAR
   ═══════════════════════════════════════════════════════════════════ */
::-webkit-scrollbar        { width: 4px; }
::-webkit-scrollbar-track  { background: transparent; }
::-webkit-scrollbar-thumb  { background: var(--border); border-radius: 2px; }

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════ */
@media (max-width: 360px) {
  :root {
    --card-w: 50px;
    --card-h: 70px;
  }
  .chip-btn { width: 42px; height: 42px; font-size: 10px; }
}

@media (min-width: 420px) {
  :root {
    --card-w: 64px;
    --card-h: 90px;
  }
}

/* ═══════════════════════════════════════════════════════════════════
   REDUCED MOTION
   ═══════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  .win-icon    { animation: none; }
  .game-logo-css { animation: none; }
  @keyframes winBounce { from {} to {} }
  @keyframes float     { from {} to {} }
}