:root {
  --bg-0: #07040f;
  --bg-1: #100820;
  --panel: rgba(18, 10, 36, 0.92);
  --panel-border: rgba(168, 85, 247, 0.28);
  --text: #f4eefe;
  --muted: #a78bc8;
  --violet: #a855f7;
  --gold: #f5c542;
  --green: #22c55e;
  --red: #ef4444;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --font-display: "Orbitron", system-ui, sans-serif;
  --font-ui: "Rajdhani", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1100px 560px at 10% -10%, rgba(124, 58, 237, 0.28), transparent 55%),
    radial-gradient(800px 420px at 100% 0%, rgba(34, 197, 94, 0.1), transparent 45%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0));
  color: var(--text);
  font-family: var(--font-ui);
}

body {
  min-height: 100dvh;
}

#app {
  max-width: 1100px;
  margin: 0 auto;
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 12px;
  padding:
    calc(12px + env(safe-area-inset-top, 0px) + 12px)
    12px
    calc(12px + env(safe-area-inset-bottom, 0px));
}

.top-bar {
  display: grid;
  grid-template-columns: auto auto 1fr auto;
  gap: 10px;
  align-items: center;
  position: relative;
  z-index: 40;
}

.btn-close-game {
  box-sizing: content-box;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 8px;
  margin: -8px 0 -8px -8px;
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  background: var(--panel);
  color: var(--text);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
}

.brand-mark {
  color: var(--green);
  text-shadow: 0 0 16px rgba(34, 197, 94, 0.55);
  font-size: 1.2rem;
}

.brand-title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.14em;
  font-size: 0.85rem;
}

.brand-sub {
  color: var(--muted);
  font-size: 0.75rem;
}

.status-chip {
  justify-self: center;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  background: rgba(10, 6, 20, 0.7);
  color: var(--muted);
  font-size: 0.85rem;
}

.status-chip.ok {
  color: var(--green);
  border-color: rgba(34, 197, 94, 0.35);
}

.status-chip.warn {
  color: var(--gold);
}

.balance-card {
  display: grid;
  justify-items: end;
  gap: 2px;
  padding: 8px 12px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
}

.balance-label {
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.balance-value {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--gold);
}

.user-chip {
  color: var(--muted);
  font-size: 0.78rem;
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.layout {
  display: grid;
  grid-template-columns: minmax(260px, 340px) 1fr;
  gap: 14px;
  align-items: start;
}

.panel {
  padding: 16px;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
  display: grid;
  gap: 12px;
}

.panel-title {
  margin: 0;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

.bet-row input,
.mines-row input[type="range"] {
  width: 100%;
}

#betAmount {
  appearance: none;
  border: 1px solid rgba(168, 85, 247, 0.3);
  background: rgba(8, 4, 18, 0.8);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.quick-bets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.quick-bets button,
.ghost {
  appearance: none;
  border: 1px solid rgba(168, 85, 247, 0.28);
  background: rgba(8, 4, 18, 0.75);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 8px;
  font-family: var(--font-ui);
  font-weight: 700;
  cursor: pointer;
}

.mines-row {
  display: grid;
  gap: 8px;
}

#mineCount {
  accent-color: var(--violet);
}

.mines-value {
  font-family: var(--font-display);
  color: var(--gold);
  letter-spacing: 0.06em;
}

.preview-card {
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(34, 197, 94, 0.28);
  background: rgba(10, 30, 18, 0.35);
}

.preview-label {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.preview-value {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--green);
  text-shadow: 0 0 18px rgba(34, 197, 94, 0.35);
}

.preview-sub {
  color: var(--muted);
  font-size: 0.9rem;
}

.cta {
  appearance: none;
  border: 0;
  border-radius: 14px;
  padding: 14px 16px;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
}

.cta.start {
  color: #052e16;
  background: linear-gradient(135deg, #4ade80, #16a34a);
  box-shadow: 0 10px 28px rgba(34, 197, 94, 0.28);
}

.cta.cashout {
  width: 100%;
  color: #1a0a2e;
  background: linear-gradient(135deg, var(--gold), #f59e0b);
  box-shadow: 0 10px 28px rgba(245, 197, 66, 0.25);
}

.cta:disabled,
.ghost:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.board-wrap {
  display: grid;
  gap: 12px;
  justify-items: center;
}

.hud {
  width: min(100%, 520px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.hud-item {
  padding: 10px;
  border-radius: 12px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  display: grid;
  gap: 2px;
  text-align: center;
}

.hud-item span {
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hud-item strong {
  font-family: var(--font-display);
  color: var(--gold);
}

.grid {
  width: min(100%, 520px);
  aspect-ratio: 1 / 1;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  padding: 12px;
  border-radius: 18px;
  background: rgba(8, 4, 18, 0.65);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
}

.tile {
  appearance: none;
  border: 1px solid rgba(168, 85, 247, 0.28);
  border-radius: 12px;
  background:
    linear-gradient(160deg, rgba(40, 20, 70, 0.95), rgba(12, 6, 24, 0.95));
  color: var(--muted);
  font-family: var(--font-display);
  font-size: clamp(0.9rem, 2.5vw, 1.2rem);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.tile:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 0 18px rgba(168, 85, 247, 0.35);
}

.tile:disabled {
  cursor: default;
}

.tile.diamond {
  border-color: rgba(34, 197, 94, 0.55);
  background: radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.35), transparent 35%),
    linear-gradient(160deg, rgba(20, 80, 40, 0.95), rgba(6, 30, 16, 0.98));
  color: #bbf7d0;
  animation: sparkle 0.45s ease;
}

.tile.mine {
  border-color: rgba(239, 68, 68, 0.65);
  background: radial-gradient(circle at center, rgba(255, 120, 80, 0.55), rgba(80, 10, 20, 0.95));
  color: #fecaca;
  animation: boom 0.5s ease;
}

.tile.hidden-mine {
  border-color: rgba(239, 68, 68, 0.35);
  background: rgba(60, 10, 20, 0.75);
  color: #fda4af;
}

.tile.flip {
  animation: flipIn 0.28s ease;
}

@keyframes sparkle {
  0% {
    transform: scale(0.85);
    filter: brightness(1.6);
  }
  100% {
    transform: scale(1);
    filter: brightness(1);
  }
}

@keyframes boom {
  0% {
    transform: scale(0.7) rotate(-6deg);
  }
  40% {
    transform: scale(1.12) rotate(4deg);
  }
  100% {
    transform: scale(1) rotate(0);
  }
}

@keyframes flipIn {
  from {
    transform: rotateY(90deg);
    opacity: 0.4;
  }
  to {
    transform: rotateY(0);
    opacity: 1;
  }
}

.actions {
  width: min(100%, 520px);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 8px;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(3, 1, 10, 0.72);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 40;
}

.modal[hidden] {
  display: none !important;
}

.modal-card {
  width: min(100%, 420px);
  padding: 22px;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
  display: grid;
  gap: 12px;
  text-align: center;
}

.modal-card.win {
  border-color: rgba(34, 197, 94, 0.45);
}

.modal-card.lose {
  border-color: rgba(239, 68, 68, 0.45);
}

.modal-title {
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  font-size: 1.2rem;
}

.modal-body {
  color: var(--muted);
  font-size: 1.05rem;
}

@media (max-width: 860px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .status-chip {
    display: none;
  }

  .top-bar {
    grid-template-columns: 1fr auto;
  }
}