/* ============================================================
   五子棋联机 - 样式
   主题 token 沿用平台 theme.css,只补足游戏所需样式
   ============================================================ */

.gb-app {
  --gb-board:        #d9b27a;
  --gb-board-2:      #c79a5d;
  --gb-board-line:   #5b3a1a;
  --gb-board-star:   #5b3a1a;
  --gb-stone-black:  #1a1a1a;
  --gb-stone-black-2:#2c2c2c;
  --gb-stone-white:  #fafafa;
  --gb-stone-white-2:#d4d4d4;
  --gb-stone-shadow: rgba(0, 0, 0, .35);

  --gb-pri:        var(--accent);
  --gb-pri-ink:    var(--accent-ink);
  --gb-ok:         var(--state-ok);
  --gb-err:        var(--state-err);
  --gb-warn:       var(--state-warn);
  --gb-info:       var(--state-info);

  --gb-surface:    var(--bg-surface);
  --gb-elev:       var(--bg-elev);
  --gb-bg:         var(--bg-base);
  --gb-line:       var(--line-soft);
  --gb-line-2:     var(--line-strong);
  --gb-fg:         var(--fg-strong);
  --gb-fg-2:       var(--fg-normal);
  --gb-fg-3:       var(--fg-muted);

  --gb-radius:     12px;
  --gb-radius-sm:  8px;
  --gb-radius-lg:  18px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--gb-bg);
  color: var(--gb-fg);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}
.gb-app { width: 100%; height: 100%; }

/* ============================================================
   屏幕切换
   ============================================================ */
.gb-screen {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.gb-screen.is-active { display: flex; }

/* ============================================================
   大厅
   ============================================================ */
.gb-lobby {
  width: 100%;
  max-width: 560px;
  background: var(--gb-surface);
  border: 1px solid var(--gb-line);
  border-radius: var(--gb-radius-lg);
  box-shadow: 0 1px 0 rgba(255,255,255,.5) inset, 0 20px 48px rgba(0,0,0,.08);
  overflow: hidden;
}
.gb-lobby-head {
  padding: 28px 28px 18px;
  border-bottom: 1px dashed var(--gb-line);
}
.gb-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.gb-title-cn {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--gb-fg);
}
.gb-title-en {
  font-family: ui-monospace, "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--gb-fg-3);
  text-transform: uppercase;
}
.gb-subtitle {
  margin-top: 8px;
  font-size: 13px;
  color: var(--gb-fg-3);
}

.gb-lobby-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 18px;
}
.gb-card {
  background: var(--gb-elev);
  border: 1px solid var(--gb-line);
  border-radius: var(--gb-radius);
  padding: 20px 16px;
  cursor: pointer;
  transition: transform .15s var(--ease), border-color .15s var(--ease), box-shadow .15s var(--ease);
  text-align: left;
}
.gb-card:hover {
  transform: translateY(-2px);
  border-color: var(--gb-pri);
  box-shadow: 0 8px 24px rgba(217, 111, 58, .15);
}
.gb-card:active { transform: translateY(0); }
.gb-card-ico {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--gb-pri);
  margin-bottom: 12px;
}
.gb-card-ico svg { width: 20px; height: 20px; }
.gb-card-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--gb-fg);
  margin-bottom: 4px;
}
.gb-card-desc {
  font-size: 12px;
  color: var(--gb-fg-3);
  line-height: 1.5;
}

/* 创建房间 - 私密模式开关 */
.gb-toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 8px 10px;
  background: var(--gb-bg);
  border: 1px solid var(--gb-line);
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
}
.gb-toggle-row input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.gb-toggle-track {
  position: relative;
  width: 32px;
  height: 18px;
  background: var(--gb-line-2);
  border-radius: 999px;
  transition: background .15s var(--ease);
  flex-shrink: 0;
}
.gb-toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 2px rgba(0,0,0,.2);
  transition: transform .15s var(--ease);
}
.gb-toggle-row input[type="checkbox"]:checked ~ .gb-toggle-track {
  background: var(--gb-pri);
}
.gb-toggle-row input[type="checkbox"]:checked ~ .gb-toggle-track .gb-toggle-thumb {
  transform: translateX(14px);
}
.gb-toggle-label {
  font-size: 12px;
  color: var(--gb-fg-2);
  font-weight: 600;
}

.gb-lobby-foot {
  padding: 14px 20px 20px;
  border-top: 1px dashed var(--gb-line);
  display: flex;
  justify-content: center;
}
.gb-foot-pill {
  font-size: 12px;
  color: var(--gb-fg-3);
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--gb-bg);
  border: 1px solid var(--gb-line);
}

/* ============================================================
   创建房间 loading
   ============================================================ */
.gb-creating {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 30px;
}
.gb-creating-text {
  font-size: 13px;
  color: var(--gb-fg-3);
  letter-spacing: 1px;
}
.gb-spinner {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid var(--gb-line);
  border-top-color: var(--gb-pri);
  animation: gb-spin 0.9s linear infinite;
}
@keyframes gb-spin {
  to { transform: rotate(360deg); }
}

/* ============================================================
   等待对手
   ============================================================ */
.gb-waiting {
  width: 100%;
  max-width: 480px;
  background: var(--gb-surface);
  border: 1px solid var(--gb-line);
  border-radius: var(--gb-radius-lg);
  padding: 36px 28px;
  text-align: center;
  box-shadow: 0 1px 0 rgba(255,255,255,.5) inset, 0 20px 48px rgba(0,0,0,.08);
}
.gb-waiting-eyebrow {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gb-fg-3);
  margin-bottom: 18px;
}
.gb-room-code-wrap {
  margin-bottom: 24px;
}
.gb-room-code-label {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--gb-fg-3);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.gb-room-code {
  font-family: ui-monospace, "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 48px;
  font-weight: 800;
  letter-spacing: 8px;
  color: var(--gb-pri);
  background: var(--gb-elev);
  border: 1px solid var(--gb-line);
  border-radius: var(--gb-radius);
  padding: 16px 20px;
  margin-bottom: 12px;
  user-select: all;
}
.gb-waiting-status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: var(--gb-fg-2);
  margin-bottom: 8px;
}
.gb-waiting-hint {
  font-size: 12px;
  color: var(--gb-fg-3);
  margin-bottom: 24px;
}
.gb-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gb-ok);
}
.gb-dot-pulse {
  animation: gb-pulse 1.4s ease-in-out infinite;
}
@keyframes gb-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .4; transform: scale(.7); }
}

/* ============================================================
   加入房间
   ============================================================ */
.gb-join {
  width: 100%;
  max-width: 420px;
  background: var(--gb-surface);
  border: 1px solid var(--gb-line);
  border-radius: var(--gb-radius-lg);
  padding: 20px 24px 28px;
  box-shadow: 0 1px 0 rgba(255,255,255,.5) inset, 0 20px 48px rgba(0,0,0,.08);
}
.gb-join-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px dashed var(--gb-line);
}
.gb-join-title {
  font-size: 16px;
  font-weight: 700;
}
.gb-join-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.gb-field-label {
  font-size: 12px;
  color: var(--gb-fg-3);
  letter-spacing: 1px;
}
.gb-input {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  font-size: 16px;
  font-family: inherit;
  background: var(--gb-elev);
  border: 1px solid var(--gb-line);
  border-radius: var(--gb-radius);
  color: var(--gb-fg);
  outline: none;
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.gb-input:focus {
  border-color: var(--gb-pri);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
.gb-room-input {
  font-family: ui-monospace, "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 24px;
  letter-spacing: 8px;
  text-align: center;
  font-weight: 700;
}
.gb-join-error {
  min-height: 18px;
  font-size: 12px;
  color: var(--gb-err);
}

/* ============================================================
   按钮
   ============================================================ */
.gb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  padding: 0 16px;
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid transparent;
  border-radius: var(--gb-radius-sm);
  background: transparent;
  color: var(--gb-fg);
  cursor: pointer;
  transition: transform .12s var(--ease), background .15s var(--ease), border-color .15s var(--ease);
  user-select: none;
}
.gb-btn:active { transform: translateY(1px); }
.gb-btn[disabled] { opacity: .55; cursor: not-allowed; }

.gb-btn-primary {
  background: var(--gb-pri);
  color: var(--gb-pri-ink);
}
.gb-btn-primary:hover { background: var(--accent-deep); }

.gb-btn-ghost {
  background: var(--gb-elev);
  border-color: var(--gb-line);
  color: var(--gb-fg-2);
}
.gb-btn-ghost:hover { border-color: var(--gb-pri); color: var(--gb-pri); }

.gb-btn-link {
  background: transparent;
  color: var(--gb-fg-3);
  border: none;
  padding: 0 8px;
}
.gb-btn-link:hover { color: var(--gb-pri); }

.gb-btn-lg {
  height: 46px;
  font-size: 14px;
  margin-top: 8px;
}

.gb-btn-back {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--gb-line);
  border-radius: var(--gb-radius-sm);
  cursor: pointer;
  color: var(--gb-fg-2);
  transition: background .15s var(--ease), border-color .15s var(--ease);
}
.gb-btn-back:hover {
  background: var(--gb-elev);
  border-color: var(--gb-pri);
  color: var(--gb-pri);
}

/* ============================================================
   游戏界面
   ============================================================ */
.gb-game {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--gb-bg);
}
.gb-game-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--gb-surface);
  border-bottom: 1px solid var(--gb-line);
  flex-shrink: 0;
}
.gb-game-title {
  flex: 1;
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}
.gb-game-title-cn {
  font-size: 15px;
  font-weight: 700;
}
.gb-game-room {
  font-family: ui-monospace, "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 12px;
  color: var(--gb-fg-3);
  letter-spacing: 1px;
}
.gb-game-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}
.gb-turn-pill {
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--gb-elev);
  border: 1px solid var(--gb-line);
  color: var(--gb-fg-2);
  white-space: nowrap;
}
.gb-turn-pill.is-my { background: var(--accent-soft); color: var(--gb-pri); border-color: var(--accent-soft); }
.gb-turn-pill.is-wait { color: var(--gb-fg-3); }

.gb-game-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px;
  gap: 10px;
  min-height: 0;
}

.gb-player {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: var(--gb-surface);
  border: 1px solid var(--gb-line);
  border-radius: 999px;
  min-width: 240px;
  max-width: 320px;
  width: 100%;
  flex-shrink: 0;
  transition: border-color .15s var(--ease), background .15s var(--ease);
}
.gb-player.is-turn {
  border-color: var(--gb-pri);
  background: var(--gb-elev);
}
.gb-player.is-winner {
  border-color: var(--gb-ok);
  background: var(--state-ok-soft);
}
.gb-player.is-loser {
  border-color: var(--gb-line);
  opacity: .55;
}
/* 观战模式:两位玩家卡片都加上观战徽章,与玩家自身身份区分 */
.gb-player.is-spectating {
  position: relative;
  border-style: dashed;
}
.gb-player.is-spectating::after {
  content: "观战";
  position: absolute;
  top: -10px;
  right: 12px;
  padding: 2px 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--gb-fg-3);
  background: var(--gb-surface);
  border: 1px solid var(--gb-line);
  border-radius: 999px;
}
.gb-player-stone {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  flex-shrink: 0;
}
.gb-stone-black {
  background: radial-gradient(circle at 35% 35%, #4a4a4a, var(--gb-stone-black) 60%);
  box-shadow: 0 2px 4px var(--gb-stone-shadow), inset 0 -2px 4px rgba(255,255,255,.08);
}
.gb-stone-white {
  background: radial-gradient(circle at 35% 35%, #ffffff, var(--gb-stone-white-2) 80%);
  box-shadow: 0 2px 4px var(--gb-stone-shadow), inset 0 -2px 4px rgba(0,0,0,.08);
}
.gb-player-info {
  flex: 1;
  min-width: 0;
}
.gb-player-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--gb-fg);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.gb-player-role {
  font-size: 11px;
  color: var(--gb-fg-3);
  letter-spacing: .5px;
}
.gb-player-turn {
  font-size: 11px;
  color: var(--gb-pri);
  font-weight: 600;
  letter-spacing: 1px;
  white-space: nowrap;
}

.gb-board-wrap {
  position: relative;
  background: var(--gb-board);
  border-radius: var(--gb-radius);
  padding: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,.12), inset 0 0 0 1px var(--gb-board-2);
  flex-shrink: 0;
  /* 棋盘自适应宽度,不超过 540px */
  width: min(540px, calc(100vh - 260px));
  height: min(540px, calc(100vh - 260px));
  max-width: calc(100vw - 32px);
  max-height: calc(100vw - 32px);
  aspect-ratio: 1 / 1;
}
.gb-board {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 6px;
  cursor: crosshair;
  touch-action: none;
}
.gb-board.is-locked { cursor: not-allowed; }
.gb-board-overlay {
  position: absolute;
  inset: 12px;
  border-radius: 6px;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.4);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 2px;
  opacity: 0;
  transition: opacity .2s var(--ease);
}
.gb-board-overlay.is-show {
  opacity: 1;
  pointer-events: auto;
}

.gb-game-foot {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--gb-surface);
  border-top: 1px solid var(--gb-line);
  flex-shrink: 0;
}

/* ============================================================
   模态
   ============================================================ */
.gb-modal-root {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.gb-modal-root.is-open { display: flex; }
.gb-modal-backdrop {
  position: absolute;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(2px);
}
.gb-modal {
  position: relative;
  width: 100%;
  max-width: 380px;
  background: var(--gb-surface);
  border: 1px solid var(--gb-line);
  border-radius: var(--gb-radius-lg);
  box-shadow: var(--shadow-2);
  overflow: hidden;
  animation: gb-modal-in .2s var(--ease);
}
@keyframes gb-modal-in {
  from { transform: translateY(8px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.gb-modal-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gb-line);
}
.gb-modal-head h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
}
.gb-modal-badge {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--gb-pri);
  flex-shrink: 0;
}
.gb-modal-badge svg { width: 18px; height: 18px; }
.gb-modal-badge.is-warn { background: var(--state-warn-soft); color: var(--gb-warn); }
.gb-modal-badge.is-success { background: var(--state-ok-soft); color: var(--gb-ok); }
.gb-modal-badge.is-danger { background: var(--state-err-soft); color: var(--gb-err); }
.gb-modal-body {
  padding: 18px 20px;
  font-size: 13px;
  color: var(--gb-fg-2);
  line-height: 1.7;
}
.gb-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 20px 16px;
  border-top: 1px dashed var(--gb-line);
}
.gb-modal-actions .gb-btn { min-width: 78px; }

/* ============================================================
   Toast
   ============================================================ */
.gb-toast-stack {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 200;
  pointer-events: none;
}
.gb-toast {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--gb-surface);
  border: 1px solid var(--gb-line);
  border-radius: var(--gb-radius-sm);
  box-shadow: var(--shadow-1);
  font-size: 13px;
  color: var(--gb-fg);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity .2s var(--ease), transform .2s var(--ease);
}
.gb-toast.show { opacity: 1; transform: translateY(0); }
.gb-toast .gb-toast-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gb-info);
}
.gb-toast.success .gb-toast-dot { background: var(--gb-ok); }
.gb-toast.warn .gb-toast-dot { background: var(--gb-warn); }
.gb-toast.error .gb-toast-dot { background: var(--gb-err); }

/* ============================================================
   小屏适配
   ============================================================ */
@media (max-width: 520px) {
  .gb-lobby-head { padding: 22px 20px 14px; }
  .gb-title-cn { font-size: 24px; }
  .gb-room-code { font-size: 36px; letter-spacing: 6px; padding: 12px 16px; }
  .gb-player { min-width: 200px; padding: 6px 12px; }
  .gb-player-name { font-size: 12px; }
  .gb-game-bar { padding: 8px 12px; }
}
@media (max-height: 600px) {
  .gb-game-body { padding: 6px; gap: 6px; }
  .gb-player { padding: 5px 12px; }
  .gb-board-wrap { padding: 8px; }
}