/* ============================================================
   五子棋对局界面：深色棋盘 + 落子/胜负动画
   ============================================================ */

.gom {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 268px;
  gap: 20px;
  width: 100%;
  align-items: center;
}

/* 左列：棋盘 + 操作条 */
.gom-left {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ---------------- 棋盘区 ---------------- */
.gom-board-wrap {
  position: relative;
  width: min(100%, 66vh);
  aspect-ratio: 1 / 1;
  margin: 0 auto;
}

/* 最小尺寸保护：手机上也不能小于 300px */
@media (max-width: 720px) {
  .gom-board-wrap {
    width: max(300px, 100%);
  }
}

.gom-board {
  position: relative;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 30% 20%, rgba(77, 141, 255, 0.09), transparent 60%),
    linear-gradient(160deg, #16203a, #101830);
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
  cursor: pointer;
  touch-action: manipulation;
}

.gom-grid {
  position: absolute;
  inset: 0;
}

.gom-stones,
.gom-win,
.gom-hint {
  position: absolute;
  inset: 0;
}

/* ---------------- 棋子 ---------------- */
.gom-stone {
  position: absolute;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
}

.gom-stone.black {
  background: radial-gradient(circle at 34% 28%, #6b7f9e 0%, #2c3d57 40%, #0a1424 100%);
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.6),
    inset 0 1px 2px rgba(255, 255, 255, 0.16);
}

.gom-stone.white {
  background: radial-gradient(circle at 34% 28%, #ffffff 0%, #eef3fa 50%, #c3d0e2 100%);
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.45),
    inset 0 0 0 1px rgba(150, 170, 200, 0.55);
}

/* 落子动画：弹跳落下 */
.gom-stone.drop {
  animation: gomDrop 0.3s cubic-bezier(0.2, 1.5, 0.4, 1) both;
}

@keyframes gomDrop {
  0% {
    transform: translate(-50%, -50%) scale(0.2);
    opacity: 0;
  }
  60% {
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
}

/* 最后一手：脉冲标记 */
.gom-stone.last::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 26%;
  height: 26%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: var(--lose);
  animation: gomPulse 1.5s ease-in-out infinite;
}

@keyframes gomPulse {
  0%,
  100% {
    opacity: 0.95;
    box-shadow: 0 0 0 0 rgba(255, 92, 122, 0.55);
  }
  50% {
    opacity: 0.6;
    box-shadow: 0 0 0 7px rgba(255, 92, 122, 0);
  }
}

/* ---------------- 悬停预览 ---------------- */
.gom-hint {
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.14s ease;
  z-index: 3;
}

.gom-hint.show.black {
  opacity: 0.4;
  background: radial-gradient(circle at 34% 28%, #6b7f9e, #0a1424);
  box-shadow: 0 0 18px rgba(77, 141, 255, 0.5);
}

.gom-hint.show.white {
  opacity: 0.62;
  background: radial-gradient(circle at 34% 28%, #fff, #c3d0e2);
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.45);
  outline: 1px solid rgba(150, 170, 200, 0.7);
}

/* ---------------- 胜利连线 ---------------- */
.gom-lw {
  position: absolute;
  height: 5px;
  transform-origin: left center;
  z-index: 4;
  pointer-events: none;
}

.gom-line {
  width: 100%;
  height: 100%;
  border-radius: 5px;
  background: linear-gradient(90deg, rgba(52, 217, 155, 0.15), var(--win), rgba(52, 217, 155, 0.15));
  box-shadow: 0 0 20px rgba(52, 217, 155, 0.9), 0 0 42px rgba(52, 217, 155, 0.4);
  transform-origin: left center;
  animation: gomGrow 0.55s var(--ease) both;
}

@keyframes gomGrow {
  from {
    transform: scaleX(0);
    opacity: 0;
  }
  to {
    transform: scaleX(1);
    opacity: 1;
  }
}

/* ---------------- 胜负结算横幅 ---------------- */
.gom-banner {
  position: absolute;
  left: 50%;
  top: 44%;
  transform: translate(-50%, -50%) scale(0.7);
  z-index: 10;
  padding: 22px 44px;
  background: rgba(11, 16, 32, 0.9);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s var(--ease);
}

.gom-banner.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.gom-banner-title {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 6px;
  background: linear-gradient(135deg, var(--win), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gom-banner.lose .gom-banner-title {
  background: linear-gradient(135deg, var(--lose), #ff9a5f);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gom-banner-sub {
  font-size: 14px;
  color: var(--ink-2);
}

/* 胜利时的粒子/光环效果 */
.gom-banner::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--win), var(--accent-2), var(--win));
  background-size: 200% 200%;
  z-index: -1;
  opacity: 0;
  animation: borderFlow 2.2s linear infinite;
}

.gom-banner.show::before {
  opacity: 0.55;
}

@keyframes borderFlow {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 200% 50%;
  }
}

/* ---------------- 侧栏 ---------------- */
.gom-side {
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.gom-status {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 14px;
  color: var(--ink);
  background: var(--panel);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  padding: 12px 17px;
  border-radius: 999px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.3);
}

.gom-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-3);
  flex: 0 0 auto;
  transition: all 0.25s ease;
}

.gom-dot.black {
  background: #0a1424;
  box-shadow: inset 0 0 0 1.5px rgba(150, 170, 200, 0.6);
}

.gom-dot.white {
  background: #fff;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.gom-panel {
  background: var(--panel);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px;
}

.gom-title {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-3);
  margin-bottom: 12px;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 7px;
}

.gom-title b {
  color: var(--accent);
}

.gom-player {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 13px;
  border-radius: 11px;
  background: rgba(7, 11, 22, 0.4);
  border: 1px solid transparent;
  font-size: 14px;
  color: var(--ink);
  margin-bottom: 8px;
  transition: all 0.25s var(--ease);
}

.gom-player.active {
  border-color: var(--accent);
  background: rgba(77, 141, 255, 0.12);
  box-shadow: 0 0 0 3px rgba(77, 141, 255, 0.1);
}

.gom-player .pname {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}

.gom-player .ptag {
  font-size: 10.5px;
  color: var(--accent-2);
  background: rgba(34, 211, 238, 0.14);
  border: 1px solid rgba(34, 211, 238, 0.3);
  padding: 2px 7px;
  border-radius: 5px;
  flex: 0 0 auto;
}

.gom-player .pbot {
  font-size: 10.5px;
  color: var(--gold);
  background: rgba(255, 201, 77, 0.12);
  border: 1px solid rgba(255, 201, 77, 0.3);
  padding: 2px 7px;
  border-radius: 5px;
  flex: 0 0 auto;
}

.gom-sd {
  width: 17px;
  height: 17px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.gom-sd.black {
  background: radial-gradient(circle at 34% 28%, #6b7f9e, #0a1424);
  box-shadow: inset 0 0 0 1px rgba(150, 170, 200, 0.5);
}

.gom-sd.white {
  background: radial-gradient(circle at 34% 28%, #fff, #c3d0e2);
  box-shadow: inset 0 0 0 1px rgba(150, 170, 200, 0.55);
}

.gom-btns {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.gom-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-3);
}

.gom-chip {
  font-size: 12px;
  color: var(--ink-2);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  padding: 4px 11px;
  border-radius: 999px;
  animation: chipIn 0.3s var(--ease);
}

@keyframes chipIn {
  from {
    opacity: 0;
    transform: scale(0.88);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 900px) {
  .gom {
    grid-template-columns: 1fr;
  }

  .gom-side {
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
  }
}

/* ============================================================
   浅色主题适配
   ============================================================ */

[data-theme="light"] .gom-board {
  background: linear-gradient(160deg, #fdfefe, #f2f6fb);
  border-color: rgba(27, 42, 63, 0.14);
  box-shadow: 0 14px 40px rgba(27, 42, 63, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

[data-theme="light"] .gom-grid {
  /* 网格线在 canvas 里画死为 #c9d6e5，浅色下也可读，无需改 */
}

[data-theme="light"] .gom-banner {
  background: rgba(255, 255, 255, 0.94);
  border-color: rgba(27, 42, 63, 0.16);
}

[data-theme="light"] .gom-player {
  background: #f6f9fd;
}

[data-theme="light"] .gom-player.active {
  background: rgba(47, 107, 255, 0.08);
}

[data-theme="light"] .gom-status {
  background: var(--panel-solid);
}

[data-theme="light"] .zoom-bar {
  background: rgba(255, 255, 255, 0.94);
}