* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: #f7f2e8;
  background-image: url("tile.png");
  background-repeat: repeat;
  background-size: 220px;
  position: relative;
}

.page-overlay {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at top, rgba(255,255,255,0.08), transparent 35%),
    rgba(18, 14, 10, 0.62);
  pointer-events: none;
}

.app {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px 40px;
}

.topbar {
  text-align: center;
  margin-bottom: 28px;
}

.topbar h1 {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  letter-spacing: 0.04em;
  color: #fff5dd;
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

.subtitle {
  margin: 10px 0 0;
  color: #e8dac0;
  font-size: 1rem;
}

.game-shell {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 24px;
  align-items: start;
}

.info-panel,
.board-panel {
  background: rgba(40, 28, 18, 0.82);
  border: 1px solid rgba(255, 233, 186, 0.18);
  border-radius: 24px;
  box-shadow:
    0 14px 40px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
}

.info-panel {
  padding: 20px;
}

.status-card {
  background: rgba(255, 248, 234, 0.08);
  border: 1px solid rgba(255, 233, 186, 0.12);
  border-radius: 18px;
  padding: 16px;
  margin-bottom: 14px;
}

.status-card.small {
  margin-bottom: 20px;
}

.label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #d8c7a5;
  margin-bottom: 8px;
}

.value {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff5dd;
  line-height: 1.4;
}

.value.player-1 {
  color: #ffffff;
  text-shadow: 0 0 8px rgba(255,255,255,0.6);
}

.value.player-2 {
  color: #111111;
  text-shadow: 0 0 6px rgba(0,0,0,0.6);
}

.stone-counts {
  display: grid;
  gap: 8px;
  color: #f5ead8;
}

.reset-btn,
.modal-btn {
  width: 100%;
  border: none;
  border-radius: 14px;
  padding: 14px 18px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease, box-shadow 0.15s ease;
  background: linear-gradient(180deg, #f3d598, #caa25c);
  color: #2d1b0c;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.22);
}

.reset-btn:hover,
.modal-btn:hover {
  transform: translateY(-1px);
  opacity: 0.96;
}

.board-panel {
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

#game {
  position: relative;
  width: min(100%, 760px);
  aspect-ratio: 4032 / 3024;
  border-radius: 20px;
  overflow: hidden;
}

#board {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  z-index: 1;
  user-select: none;
}

#holes {
  position: absolute;
  inset: 0;
  z-index: 2;
}

#pieces {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.hole {
  position: absolute;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  cursor: pointer;
  box-sizing: border-box;
  background: rgba(255, 220, 120, 0.14);
  border: 2px dashed rgba(255, 227, 160, 0.4);
  transition: opacity 0.15s ease, transform 0.15s ease, background 0.15s ease;
}

.hole:hover {
  background: rgba(255, 220, 120, 0.22);
  transform: translate(-50%, -50%) scale(1.03);
}

.hole.valid-target {
  background: rgba(128, 220, 160, 0.22);
  border-color: rgba(170, 255, 190, 0.7);
}

.hole.valid-target:hover {
  background: rgba(128, 220, 160, 0.28);
  transform: translate(-50%, -50%) scale(1.03);
}

.hole.occupied {
  pointer-events: none;
  opacity: 0;
}

.piece {
  position: absolute;
  width: 9%;
  aspect-ratio: 1 / 1;
  max-width: 72px;
  transform: translate(-50%, -50%);
  cursor: pointer;
  z-index: 3;
  transition: transform 0.15s ease, filter 0.15s ease;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: auto;
  object-fit: contain;
  display: block;
  background: transparent;
  border: 0;
}

/* desktop/default */
.piece[data-player="1"] {
  filter: drop-shadow(0 6px 10px rgba(0,0,0,0.35));
}

.piece[data-player="2"] {
  filter: drop-shadow(0 6px 10px rgba(0,0,0,0.6));
}

.piece:hover {
  transform: translate(-50%, -50%) scale(1.08);
}

.piece.selected {
  transform: translate(-50%, -50%) scale(1.25);
}

.piece[data-player="1"].selected {
  filter:
    drop-shadow(0 0 0.35rem rgba(255, 240, 180, 0.85))
    drop-shadow(0 8px 14px rgba(0,0,0,0.45));
}

.piece[data-player="2"].selected {
  filter:
    drop-shadow(0 0 0.35rem rgba(255, 240, 180, 0.85))
    drop-shadow(0 8px 14px rgba(0,0,0,0.65));
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.55);
  padding: 20px;
}

.modal.hidden {
  display: none;
}

.modal-card {
  width: min(420px, 100%);
  background: linear-gradient(180deg, #3d2a1c, #24170f);
  color: #fff6e7;
  border: 1px solid rgba(255, 231, 187, 0.18);
  border-radius: 22px;
  padding: 28px 24px;
  text-align: center;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.38);
}

.modal-card h2 {
  margin: 0 0 12px;
  font-size: 1.8rem;
}

.modal-card p {
  margin: 0 0 20px;
  color: #ead9bb;
  font-size: 1.05rem;
}

@media (max-width: 900px) {
  .game-shell {
    grid-template-columns: 1fr;
  }

  .info-panel {
    order: 2;
  }

  .board-panel {
    order: 1;
  }
}

@media (max-width: 600px) {
  .app {
    padding: 20px 14px 28px;
  }

  .info-panel,
  .board-panel {
    border-radius: 18px;
  }

  .piece {
    width: 40px;
    aspect-ratio: 1 / 1;
    object-fit: contain;
  }

  .piece[data-player="1"] {
    filter: drop-shadow(0 6px 10px rgba(0,0,0,0.35));
  }

  .piece[data-player="2"] {
    filter: drop-shadow(0 6px 10px rgba(0,0,0,0.7));
  }

  .piece[data-player="1"].selected {
    filter:
      drop-shadow(0 0 0.35rem rgba(255, 240, 180, 0.85))
      drop-shadow(0 8px 14px rgba(0,0,0,0.45));
  }

  .piece[data-player="2"].selected {
    filter:
      drop-shadow(0 0 0.35rem rgba(255, 240, 180, 0.85))
      drop-shadow(0 8px 14px rgba(0,0,0,0.7));
  }
}

@media (max-width: 900px) and (orientation: landscape) and (max-height: 500px) {
  body {
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .app {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px;
  }

  .game-shell {
    grid-template-columns: 220px 1fr;
    gap: 12px;
    align-items: start;
  }

  .info-panel {
    display: block;
    order: 1;
    padding: 14px;
  }

  .board-panel {
    order: 2;
    padding: 10px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
  }

  #game {
    height: calc(100dvh - 40px);
    width: auto;
    max-width: 100%;
    aspect-ratio: 4032 / 3024;
  }

  .status-card {
    padding: 12px;
    margin-bottom: 10px;
  }

  .reset-btn,
  .modal-btn {
    padding: 10px 14px;
    font-size: 0.95rem;
  }

  .topbar {
    margin-bottom: 12px;
  }

  .topbar h1 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
  }

  .subtitle {
    font-size: 0.95rem;
  }
}

.back-link {
  display: inline-block;
  margin-bottom: 18px;
  color: #fff0c8;
  text-decoration: none;
  font-weight: 700;
}

.back-link:hover {
  text-decoration: underline;
}

.reset-btn + .reset-btn {
  margin-top: 10px;
}