:root {
  color-scheme: dark;
  --bg: #080b10;
  --panel: #111822;
  --panel-2: #172232;
  --line: rgba(255, 255, 255, 0.12);
  --text: #f5f8ff;
  --muted: #9aa9bd;
  --accent: #38d6ff;
  --danger: #ff3d57;
  --warning: #ffb238;
  --ok: #53ef9d;
  --cell: #202c3a;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
  --tile-size: min(8.4vmin, 66px);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body.bright {
  color-scheme: light;
  --bg: #f5f8ff;
  --panel: #ffffff;
  --panel-2: #e9eff9;
  --line: rgba(20, 33, 50, 0.14);
  --text: #101722;
  --muted: #536579;
  --cell: #dfe7f3;
  --shadow: 0 20px 56px rgba(45, 70, 105, 0.18);
  background:
    radial-gradient(circle at 15% 8%, rgba(56, 214, 255, 0.22), transparent 29%),
    radial-gradient(circle at 90% 18%, rgba(255, 178, 56, 0.22), transparent 28%),
    linear-gradient(135deg, #f8fbff 0%, #edf4ff 52%, #fff8ed 100%);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 10%, rgba(56, 214, 255, 0.18), transparent 30%),
    radial-gradient(circle at 88% 22%, rgba(255, 61, 87, 0.16), transparent 28%),
    linear-gradient(135deg, #070910 0%, #0d121a 52%, #121013 100%);
  overflow-x: hidden;
}

button {
  font: inherit;
}

.game-shell {
  width: min(1180px, calc(100vw - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px 0;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 18px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(13, 18, 26, 0.82);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

body.bright .topbar,
body.bright .side-panel {
  background: rgba(255, 255, 255, 0.82);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 240px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, #ff3d57 0 24%, transparent 24% 36%, #38d6ff 36% 60%, transparent 60% 72%, #53ef9d 72%),
    #1b2634;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.24), 0 10px 30px rgba(56, 214, 255, 0.18);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(1.3rem, 2.4vw, 2.1rem);
  line-height: 1;
  letter-spacing: 0;
}

.brand p {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.9rem;
}

.theme-button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 13px;
  color: var(--text);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 800;
  white-space: nowrap;
}

.theme-icon {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #101722;
  background: var(--warning);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(82px, 1fr));
  gap: 10px;
  width: min(560px, 100%);
}

.stat,
.panel-block {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.025));
  padding: 11px 12px;
}

.stat span,
.label {
  display: block;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0;
}

.stat strong,
.panel-block strong,
.pressure-head strong {
  display: block;
  margin-top: 3px;
  font-size: 1.18rem;
  line-height: 1.1;
}

.play-area {
  display: grid;
  grid-template-columns: 180px minmax(360px, 1fr) 148px;
  align-items: center;
  gap: 18px;
}

.side-panel {
  display: grid;
  gap: 12px;
  align-content: center;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(14, 20, 29, 0.74);
  box-shadow: var(--shadow);
}

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

.board-frame {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
    #101721;
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

body.bright .board-frame {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.22)),
    #e9eff9;
}

.board {
  display: grid;
  grid-template-columns: repeat(8, var(--tile-size));
  grid-template-rows: repeat(8, var(--tile-size));
  gap: 7px;
  touch-action: manipulation;
}

.cell {
  width: var(--tile-size);
  height: var(--tile-size);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: radial-gradient(circle at 50% 35%, rgba(255, 255, 255, 0.08), transparent 52%), var(--cell);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.cell:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.32);
}

.cell.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 214, 255, 0.24), 0 0 24px rgba(56, 214, 255, 0.26);
}

.cell.hint {
  animation: hintPulse 900ms ease;
}

.gem {
  width: 72%;
  height: 72%;
  display: grid;
  place-items: center;
  border-radius: 28%;
  color: rgba(255, 255, 255, 0.9);
  font-size: calc(var(--tile-size) * 0.36);
  font-weight: 900;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.38);
  box-shadow: inset 0 7px 10px rgba(255, 255, 255, 0.22), inset 0 -8px 12px rgba(0, 0, 0, 0.28), 0 10px 18px rgba(0, 0, 0, 0.25);
  transform: rotate(45deg);
  transition: transform 160ms ease, opacity 160ms ease;
}

.gem span {
  transform: rotate(-45deg);
}

.gem.red {
  background: linear-gradient(135deg, #ff6b7c, #d81936);
}

.gem.blue {
  background: linear-gradient(135deg, #61d6ff, #116ad8);
}

.gem.green {
  background: linear-gradient(135deg, #75f5a9, #0ea65d);
}

.gem.yellow {
  background: linear-gradient(135deg, #ffe07a, #d98b07);
}

.gem.purple {
  background: linear-gradient(135deg, #d991ff, #7b28d9);
}

.cell.clearing .gem {
  opacity: 0;
  transform: rotate(45deg) scale(1.35);
}

.message {
  min-height: 22px;
  color: var(--text);
  font-size: 0.95rem;
  text-align: center;
}

.pressure-panel {
  min-height: 520px;
  justify-items: center;
  grid-template-rows: auto minmax(360px, 1fr) auto;
}

.pressure-head {
  width: 100%;
  text-align: center;
}

.pressure-track {
  position: relative;
  width: min(96px, 100%);
  height: 360px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.pressure-fill {
  position: absolute;
  inset: auto 0 0;
  height: 0%;
  width: 100%;
  background: linear-gradient(0deg, #53ef9d 0%, #ffb238 58%, #ff3d57 100%);
  box-shadow: 0 0 28px rgba(255, 61, 87, 0.42);
  transition: height 260ms ease, width 260ms ease;
}

.pressure-panel.danger {
  animation: dangerPulse 800ms ease-in-out infinite alternate;
}

.actions {
  display: flex;
  gap: 10px;
}

.icon-button,
.modal-actions button {
  min-width: 48px;
  min-height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: var(--text);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.icon-button:hover,
.modal-actions button:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.34);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.06));
}

.overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(2, 4, 8, 0.72);
  backdrop-filter: blur(10px);
  z-index: 10;
}

.overlay.hidden {
  display: none;
}

.hidden {
  display: none !important;
}

.modal {
  width: min(440px, 100%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  padding: 24px;
  background: linear-gradient(180deg, rgba(23, 34, 50, 0.98), rgba(12, 17, 24, 0.98));
  box-shadow: var(--shadow);
}

.modal-kicker {
  color: var(--warning);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

.modal h2 {
  margin-top: 8px;
  font-size: 2rem;
}

.final-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 20px 0;
}

.final-stats div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.05);
}

.final-stats span {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.final-stats strong {
  display: block;
  margin-top: 5px;
  font-size: 1.1rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.modal-actions button {
  min-width: 108px;
  padding: 0 18px;
}

.modal-actions button:last-child {
  border-color: rgba(255, 61, 87, 0.45);
  background: linear-gradient(180deg, rgba(255, 61, 87, 0.9), rgba(190, 25, 47, 0.9));
}

@keyframes dangerPulse {
  from {
    box-shadow: 0 0 0 rgba(255, 61, 87, 0);
  }
  to {
    box-shadow: 0 0 36px rgba(255, 61, 87, 0.34);
  }
}

@keyframes hintPulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.06);
    border-color: var(--warning);
  }
}

@media (max-width: 920px) {
  :root {
    --tile-size: min(10.4vw, 54px);
  }

  .game-shell {
    width: min(720px, calc(100vw - 24px));
    padding: 12px 0;
  }

  .topbar {
    display: grid;
    grid-template-columns: 1fr auto;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-column: 1 / -1;
    width: 100%;
  }

  .play-area {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .left-panel {
    grid-template-columns: repeat(4, 1fr);
    order: 2;
  }

  .pressure-panel {
    min-height: auto;
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto;
    align-items: center;
    order: 3;
  }

  .pressure-track {
    width: 100%;
    height: 28px;
  }

  .pressure-fill {
    inset: 0 auto 0 0;
    width: 0%;
    height: 100%;
  }

  .board-wrap {
    order: 1;
  }
}

@media (max-width: 560px) {
  .game-shell {
    width: min(374px, calc(100vw - 16px));
    max-width: min(374px, calc(100vw - 16px));
    margin: 0 8px;
    padding: 8px 0 12px;
    gap: 10px;
  }

  .topbar,
  .side-panel {
    padding: 10px;
  }

  .topbar {
    gap: 10px;
    overflow: hidden;
  }

  .brand {
    min-width: 0;
    gap: 9px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  h1 {
    font-size: 1.12rem;
  }

  .brand p {
    display: none;
  }

  .theme-button {
    min-height: 38px;
    padding: 0 10px;
    font-size: 0.8rem;
  }

  .theme-icon {
    width: 18px;
    height: 18px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .stat,
  .panel-block {
    min-width: 0;
    padding: 8px 7px;
  }

  .stat span,
  .label {
    font-size: 0.62rem;
  }

  .stat strong,
  .panel-block strong,
  .pressure-head strong {
    font-size: 0.94rem;
  }

  .left-panel {
    grid-template-columns: repeat(2, 1fr);
  }

  .board {
    width: 100%;
    gap: 3px;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    grid-template-rows: repeat(8, minmax(0, 1fr));
  }

  .board-frame {
    width: min(318px, 100%);
    padding: 6px;
  }

  .cell {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
  }

  .gem {
    font-size: 1rem;
  }

  .pressure-panel {
    grid-template-columns: 72px 1fr auto;
    gap: 8px;
  }

  .pressure-track {
    height: 22px;
  }

  .actions {
    gap: 6px;
  }

  .icon-button {
    min-width: 40px;
    min-height: 38px;
  }

  .modal {
    padding: 18px;
  }

  .final-stats {
    grid-template-columns: 1fr;
  }
}