/* ============================================
   MINESWEEPER — CYBERPUNK THEME
   Neon / Glitch / Dark Chrome
   ============================================ */

/* 本地字体 */
@font-face {
  font-family: 'Orbitron';
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url('fonts/orbitron.woff2') format('woff2');
}
@font-face {
  font-family: 'Share Tech Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/share-tech-mono.woff2') format('woff2');
}

:root {
  --neon-cyan: #00f0ff;
  --neon-magenta: #ff2a6d;
  --neon-yellow: #f5f740;
  --neon-green: #05ffa1;
  --bg-dark: #0a0a12;
  --bg-panel: #0d0d1a;
  --bg-cell: #12122a;
  --border-dim: rgba(0, 240, 255, 0.12);
  --text-dim: #5a6a7a;
  --font-display: 'Orbitron', sans-serif;
  --font-mono: 'Share Tech Mono', 'Courier New', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; }

/* 允许输入框选中文本 */
input, textarea { -webkit-user-select: text; user-select: text; }

body {
  font-family: var(--font-mono);
  background: var(--bg-dark);
  min-height: 100vh;
  min-height: 100dvh;
  color: #c0d0e0;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 12px 8px;
  position: relative;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
  /* 多层赛博朋克背景 */
  background-color: #050510;
  background-image:
    /* 扫描线 */
    repeating-linear-gradient(
      0deg,
      transparent, transparent 2px,
      rgba(0, 240, 255, 0.018) 2px, rgba(0, 240, 255, 0.018) 4px
    ),
    /* 透视网格地面 */
    linear-gradient(rgba(0,240,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,240,255,0.04) 1px, transparent 1px),
    /* 深色渐变底色 */
    radial-gradient(ellipse at 50% 0%, #0a1628 0%, #050510 60%),
    /* 底部霓虹地平线光晕 */
    radial-gradient(ellipse at 50% 100%, rgba(255,42,109,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(0,240,255,0.06) 0%, transparent 40%);
  background-size:
    100% 100%,
    60px 60px,
    60px 60px,
    100% 100%,
    100% 100%,
    100% 100%;
}

/* 顶部霓虹光晕 */
body::before {
  content: '';
  position: fixed;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 120%;
  height: 60%;
  background: radial-gradient(ellipse, rgba(0,240,255,0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* 动态浮动光点 */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(0,240,255,0.3), transparent),
    radial-gradient(1px 1px at 30% 70%, rgba(255,42,109,0.25), transparent),
    radial-gradient(1px 1px at 60% 15%, rgba(245,247,64,0.2), transparent),
    radial-gradient(1px 1px at 80% 60%, rgba(0,240,255,0.2), transparent),
    radial-gradient(1px 1px at 45% 85%, rgba(5,255,161,0.2), transparent),
    radial-gradient(1px 1px at 90% 30%, rgba(255,42,109,0.15), transparent),
    radial-gradient(1.5px 1.5px at 20% 50%, rgba(0,240,255,0.25), transparent),
    radial-gradient(1px 1px at 70% 40%, rgba(245,247,64,0.15), transparent);
  animation: starDrift 20s linear infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes starDrift {
  0%   { transform: translateY(0); }
  100% { transform: translateY(-30px); }
}

/* 确保内容在背景之上 */
.electric-frame { position: relative; z-index: 1; }

.hidden { display: none !important; }

/* ===== Electric Frame — Neon Border ===== */
.electric-frame {
  position: relative;
  max-width: 1100px;
  width: 100%;
  padding: 2px;
  /* Animated neon gradient border */
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta), var(--neon-cyan));
  background-size: 200% 100%;
  animation: neonShift 4s linear infinite;
  /* Cyberpunk angular cut corners */
  clip-path: polygon(
    0 12px, 12px 0, calc(100% - 12px) 0, 100% 12px,
    100% calc(100% - 12px), calc(100% - 12px) 100%, 12px 100%, 0 calc(100% - 12px)
  );
}

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

.electric-glow {
  position: absolute;
  inset: -6px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta), var(--neon-cyan));
  background-size: 200% 100%;
  animation: neonShift 4s linear infinite;
  filter: blur(18px);
  opacity: 0.35;
  z-index: -1;
  pointer-events: none;
  clip-path: polygon(
    0 12px, 12px 0, calc(100% - 12px) 0, 100% 12px,
    100% calc(100% - 12px), calc(100% - 12px) 100%, 12px 100%, 0 calc(100% - 12px)
  );
}

.electric-frame:hover .electric-glow { opacity: 0.55; }

/* ===== App Container ===== */
#app {
  background: var(--bg-panel);
  padding: 24px;
  position: relative;
  z-index: 1;
  clip-path: polygon(
    0 12px, 12px 0, calc(100% - 12px) 0, 100% 12px,
    100% calc(100% - 12px), calc(100% - 12px) 100%, 12px 100%, 0 calc(100% - 12px)
  );
}

/* Corner accent decorations */
#app::before, #app::after {
  content: '';
  position: absolute;
  width: 40px;
  height: 2px;
  background: var(--neon-cyan);
  box-shadow: 0 0 6px var(--neon-cyan);
}
#app::before { top: 8px; left: 20px; }
#app::after { bottom: 8px; right: 20px; }

/* ===== Header ===== */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-dim);
}

header h1 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
  color: var(--neon-cyan);
  text-shadow: 0 0 10px rgba(0,240,255,0.5), 0 0 30px rgba(0,240,255,0.2);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.subtitle {
  font-size: 9px;
  color: rgba(0, 240, 255, 0.06);
  letter-spacing: 1px;
  font-style: italic;
  margin-top: 2px;
  user-select: none;
  transition: color 2s;
}
.subtitle:hover {
  color: rgba(0, 240, 255, 0.35);
}

#user-area { display: flex; align-items: center; gap: 10px; }

.lang-btn {
  font-family: var(--font-mono);
  background: transparent;
  color: var(--neon-yellow);
  border: 1px solid rgba(245,247,64,0.3);
  padding: 4px 10px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  transition: all 0.2s;
}
.lang-btn:hover {
  border-color: var(--neon-yellow);
  background: rgba(245,247,64,0.1);
  text-shadow: 0 0 6px rgba(245,247,64,0.4);
}

.player-name {
  font-size: 12px;
  color: var(--neon-cyan);
  text-shadow: 0 0 4px rgba(0,240,255,0.3);
}

/* Win name input */
#win-name-area { margin: 10px 0; }
#win-name-area p { font-size: 12px; color: var(--text-dim); margin-bottom: 8px; }

.win-name-form {
  display: flex;
  gap: 8px;
  justify-content: center;
}
.win-name-form input {
  font-family: var(--font-mono);
  padding: 8px 14px;
  border: 1px solid rgba(0,240,255,0.2);
  background: rgba(0,0,0,0.4);
  color: var(--neon-cyan);
  font-size: 14px;
  width: 180px;
  text-align: center;
}
.win-name-form input:focus {
  border-color: var(--neon-cyan);
  outline: none;
  box-shadow: 0 0 10px rgba(0,240,255,0.2);
}

#login-btn {
  font-family: var(--font-mono);
  background: transparent;
  color: var(--neon-magenta);
  border: 1px solid var(--neon-magenta);
  padding: 6px 16px;
  cursor: pointer;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.2s;
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
}
#login-btn:hover {
  background: rgba(255,42,109,0.15);
  box-shadow: 0 0 12px rgba(255,42,109,0.3), inset 0 0 12px rgba(255,42,109,0.1);
}

#user-info { display: flex; align-items: center; gap: 8px; }
#user-avatar { width: 28px; height: 28px; border-radius: 2px; border: 1px solid var(--neon-cyan); }
#user-name { font-size: 12px; color: var(--neon-cyan); }

.small-btn {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 2px 8px;
  cursor: pointer;
  font-size: 10px;
  font-family: var(--font-mono);
  transition: all 0.2s;
}
.small-btn:hover { color: var(--neon-magenta); border-color: var(--neon-magenta); }

/* ===== Controls ===== */
#controls {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 16px;
}

.diff-btn, .icon-btn {
  font-family: var(--font-mono);
  padding: 8px 16px;
  border: 1px solid rgba(0,240,255,0.15);
  background: rgba(0,240,255,0.03);
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.2s;
  clip-path: polygon(0 0, calc(100% - 4px) 0, 100% 4px, 100% 100%, 4px 100%, 0 calc(100% - 4px));
}

.diff-btn:hover, .icon-btn:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(0,240,255,0.08);
  text-shadow: 0 0 6px rgba(0,240,255,0.4);
}

.diff-btn.active {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(0,240,255,0.1);
  box-shadow: 0 0 10px rgba(0,240,255,0.15), inset 0 0 10px rgba(0,240,255,0.05);
  text-shadow: 0 0 8px rgba(0,240,255,0.6);
}

.donate-btn { color: var(--neon-yellow); border-color: rgba(245,247,64,0.2); }
.donate-btn:hover { border-color: var(--neon-yellow); color: var(--neon-yellow); background: rgba(245,247,64,0.08); text-shadow: 0 0 6px rgba(245,247,64,0.4); }

.diff-btn[data-level="ultimate"] { color: var(--neon-magenta); border-color: rgba(255,42,109,0.2); }
.diff-btn[data-level="ultimate"].active {
  color: var(--neon-magenta); border-color: var(--neon-magenta);
  background: rgba(255,42,109,0.1);
  box-shadow: 0 0 10px rgba(255,42,109,0.15);
  text-shadow: 0 0 8px rgba(255,42,109,0.6);
}

/* ===== Game Info Bar ===== */
#game-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0,0,0,0.5);
  border: 1px solid var(--border-dim);
  padding: 12px 24px;
  margin-bottom: 16px;
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--neon-cyan);
  text-shadow: 0 0 6px rgba(0,240,255,0.3);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.info-item { display: flex; align-items: center; gap: 6px; }

#reset-btn {
  font-size: 30px;
  background: none;
  border: none;
  cursor: pointer;
  transition: transform 0.15s;
  line-height: 1;
  filter: drop-shadow(0 0 4px rgba(0,240,255,0.3));
}
#reset-btn:hover { transform: scale(1.2); }

/* ===== Board ===== */
#board-container {
  display: flex;
  justify-content: center;
  overflow: hidden;
}

#board {
  display: inline-grid;
  gap: 1px;
  background: rgba(0,0,0,0.4);
  padding: 4px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  -webkit-touch-callout: none;
  /* 棋盘凹陷边框 */
  box-shadow:
    inset 2px 2px 4px rgba(0,0,0,0.5),
    inset -1px -1px 2px rgba(0,240,255,0.05),
    0 0 12px rgba(0,240,255,0.04);
  border: 1px solid rgba(0,240,255,0.08);
}

.cell {
  width: var(--cell-size, 32px);
  height: var(--cell-size, 32px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--cell-font, 14px);
  font-weight: 700;
  font-family: var(--font-display);
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

.cell.covered {
  background: linear-gradient(145deg, #1a1a3a, #0e0e22);
  border: 1px solid rgba(0,240,255,0.1);
  /* 3D 凸起效果 */
  box-shadow:
    inset 1px 1px 0 rgba(0,240,255,0.12),
    inset -1px -1px 0 rgba(0,0,0,0.4),
    0 1px 2px rgba(0,0,0,0.3);
  position: relative;
}
.cell.covered:hover {
  background: linear-gradient(145deg, #222244, #161630);
  border-color: rgba(0,240,255,0.3);
  box-shadow:
    inset 1px 1px 0 rgba(0,240,255,0.2),
    inset -1px -1px 0 rgba(0,0,0,0.4),
    0 0 6px rgba(0,240,255,0.1);
}
.cell.covered:active {
  /* 按下时凹陷 */
  box-shadow:
    inset -1px -1px 0 rgba(0,240,255,0.08),
    inset 1px 1px 2px rgba(0,0,0,0.5);
  background: #0c0c1e;
}

.cell.revealed {
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(0,240,255,0.03);
  /* 凹陷效果 */
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.4);
  cursor: default;
}

.cell.flagged {
  background: linear-gradient(145deg, #2a1020, #1a0a18);
  border-color: rgba(255,42,109,0.25);
  box-shadow:
    inset 1px 1px 0 rgba(255,42,109,0.1),
    inset -1px -1px 0 rgba(0,0,0,0.4),
    0 0 4px rgba(255,42,109,0.1);
}

.cell.mine-hit {
  background: var(--neon-magenta) !important;
  box-shadow: 0 0 12px rgba(255,42,109,0.6), inset 0 0 8px rgba(255,255,255,0.2) !important;
}
.cell.mine-show {
  background: rgba(255,42,109,0.08);
  box-shadow: inset 0 0 4px rgba(255,42,109,0.15);
}

/* 单击反馈闪烁 */
.cell.cell-flash {
  background: rgba(0, 240, 255, 0.2) !important;
  border-color: rgba(0, 240, 255, 0.5) !important;
  box-shadow: inset 0 0 6px rgba(0, 240, 255, 0.3), 0 0 4px rgba(0, 240, 255, 0.2) !important;
}

/* Neon number colors */
.cell.n1 { color: var(--neon-cyan); text-shadow: 0 0 4px rgba(0,240,255,0.4); }
.cell.n2 { color: var(--neon-green); text-shadow: 0 0 4px rgba(5,255,161,0.4); }
.cell.n3 { color: var(--neon-magenta); text-shadow: 0 0 4px rgba(255,42,109,0.4); }
.cell.n4 { color: #bf5af2; text-shadow: 0 0 4px rgba(191,90,242,0.4); }
.cell.n5 { color: var(--neon-yellow); text-shadow: 0 0 4px rgba(245,247,64,0.4); }
.cell.n6 { color: #00d4aa; text-shadow: 0 0 4px rgba(0,212,170,0.4); }
.cell.n7 { color: #ff6b9d; text-shadow: 0 0 4px rgba(255,107,157,0.4); }
.cell.n8 { color: #8899aa; }

/* ===== Modals ===== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(5,5,15,0.85);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.15s;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-content {
  background: var(--bg-panel);
  padding: 28px;
  text-align: center;
  min-width: 300px;
  max-width: 420px;
  border: 1px solid rgba(0,240,255,0.2);
  box-shadow: 0 0 30px rgba(0,240,255,0.08), 0 20px 60px rgba(0,0,0,0.6);
  clip-path: polygon(
    0 10px, 10px 0, calc(100% - 10px) 0, 100% 10px,
    100% calc(100% - 10px), calc(100% - 10px) 100%, 10px 100%, 0 calc(100% - 10px)
  );
}

.modal-content h2 {
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--neon-cyan);
  text-shadow: 0 0 8px rgba(0,240,255,0.3);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.modal-content p { margin-bottom: 10px; color: var(--text-dim); font-size: 13px; }

.modal-content button {
  font-family: var(--font-mono);
  background: transparent;
  color: var(--neon-cyan);
  border: 1px solid var(--neon-cyan);
  padding: 9px 24px;
  cursor: pointer;
  font-size: 13px;
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.2s;
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
}
.modal-content button:hover {
  background: rgba(0,240,255,0.1);
  box-shadow: 0 0 12px rgba(0,240,255,0.2), inset 0 0 12px rgba(0,240,255,0.05);
}

/* ===== Ranking ===== */
.rank-content { min-width: 420px; max-width: 520px; }

#rank-scope-tabs {
  display: flex; gap: 6px; justify-content: center; margin-bottom: 10px;
}
.scope-tab {
  font-family: var(--font-mono);
  background: transparent;
  color: var(--text-dim);
  border: 1px solid rgba(0,240,255,0.1);
  padding: 6px 16px;
  cursor: pointer;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.2s;
}
.scope-tab.active {
  color: var(--neon-magenta);
  border-color: var(--neon-magenta);
  background: rgba(255,42,109,0.1);
  text-shadow: 0 0 6px rgba(255,42,109,0.4);
}
.scope-tab:hover:not(.active) {
  border-color: rgba(255,42,109,0.4);
  color: rgba(255,42,109,0.7);
}

#rank-tabs { display: flex; gap: 6px; justify-content: center; margin-bottom: 10px; }

.rank-tab {
  font-family: var(--font-mono);
  background: transparent;
  color: var(--text-dim);
  border: 1px solid rgba(0,240,255,0.1);
  padding: 4px 14px;
  cursor: pointer;
  font-size: 11px;
  text-transform: uppercase;
  transition: all 0.2s;
}
.rank-tab.active {
  color: var(--neon-cyan);
  border-color: var(--neon-cyan);
  background: rgba(0,240,255,0.1);
  text-shadow: 0 0 6px rgba(0,240,255,0.4);
}

.rank-info {
  font-size: 10px;
  color: var(--text-dim);
  text-align: center;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

#rank-table-wrap {
  max-height: 360px;
  overflow-y: auto;
  margin-bottom: 10px;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,240,255,0.2) transparent;
}
#rank-table-wrap::-webkit-scrollbar { width: 4px; }
#rank-table-wrap::-webkit-scrollbar-thumb { background: rgba(0,240,255,0.2); border-radius: 2px; }

#rank-table { width: 100%; border-collapse: collapse; }
#rank-table th, #rank-table td {
  padding: 6px 8px;
  text-align: center;
  border-bottom: 1px solid rgba(0,240,255,0.06);
  font-size: 12px;
}
#rank-table th { color: var(--text-dim); font-weight: normal; text-transform: uppercase; letter-spacing: 1px; font-size: 10px; position: sticky; top: 0; background: var(--bg-panel); }

#rank-page-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 11px;
  color: var(--text-dim);
}
.page-btn {
  font-family: var(--font-mono);
  background: transparent !important;
  color: var(--neon-cyan) !important;
  border: 1px solid rgba(0,240,255,0.2) !important;
  padding: 4px 12px !important;
  font-size: 11px !important;
  cursor: pointer;
  margin-top: 0 !important;
}
.page-btn:hover { background: rgba(0,240,255,0.08) !important; }

/* ===== Donate ===== */
.cancel-btn {
  background: transparent !important;
  color: var(--text-dim) !important;
  border-color: rgba(255,255,255,0.1) !important;
}
.cancel-btn:hover { border-color: var(--neon-magenta) !important; color: var(--neon-magenta) !important; }

.donate-content { min-width: 340px; max-width: 400px; }
.donate-hint { font-size: 11px; color: var(--text-dim); }

#donate-tabs { display: flex; gap: 8px; justify-content: center; margin: 14px 0 10px; }
.donate-tab {
  font-family: var(--font-mono);
  background: transparent; color: var(--text-dim); border: 1px solid rgba(0,240,255,0.1);
  padding: 4px 16px; cursor: pointer; font-size: 11px; text-transform: uppercase; transition: all 0.2s;
}
.donate-tab.active {
  color: var(--neon-yellow); border-color: var(--neon-yellow);
  background: rgba(245,247,64,0.08);
  text-shadow: 0 0 6px rgba(245,247,64,0.3);
}

#donate-qr { display: flex; justify-content: center; margin-bottom: 14px; }
.donate-qr-img { width: 180px; height: 180px; overflow: hidden; background: #fff; border: 1px solid rgba(0,240,255,0.2); }
.donate-qr-img img { width: 100%; height: 100%; object-fit: contain; }
.qr-placeholder { width: 100%; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; color: #999; font-size: 10px; gap: 4px; text-align: center; }
.qr-placeholder p:first-child { font-size: 28px; }
.qr-placeholder code { background: #eee; padding: 2px 6px; color: #666; font-size: 9px; }

.donate-amounts { display: flex; gap: 8px; justify-content: center; margin-bottom: 10px; }
.donate-tag {
  background: rgba(245,247,64,0.06); color: var(--neon-yellow);
  border: 1px solid rgba(245,247,64,0.15);
  padding: 2px 12px; font-size: 11px;
}
.donate-thanks { font-size: 11px; color: #444; }

/* ===== Ultimate mode ===== */
#app.ultimate-mode { max-width: 100%; padding: 10px; }
#app.ultimate-mode ~ .electric-glow { display: none; }

/* Ultimate: frame goes full width, no scroll */
.electric-frame:has(#app.ultimate-mode) {
  max-width: 100%;
}
.electric-frame.frame-ultimate {
  max-width: 100%;
}

body:has(.frame-ultimate),
body.body-ultimate {
  padding: 4px;
  height: 100vh;
  overflow: hidden;
}

.frame-ultimate {
  height: calc(100vh - 8px);
}

.frame-ultimate #app {
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.frame-ultimate #board-container {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ===== Game Stats Bar ===== */
#game-stats {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 14px;
  font-size: 10px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}
#game-stats span span { color: var(--neon-cyan); }

/* ===== Win modal ===== */
.win-content { position: relative; overflow: hidden; }
.win-time-display {
  font-family: var(--font-display);
  font-size: 42px !important;
  color: var(--neon-cyan) !important;
  text-shadow: 0 0 20px rgba(0,240,255,0.6);
  margin: 8px 0 !important;
}
.win-actions { display: flex; gap: 10px; justify-content: center; margin-top: 12px; }

/* Win particles */
.win-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.win-particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  animation: particleRise 1.5s ease-out forwards;
}
@keyframes particleRise {
  0% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-120px) scale(0); }
}

/* Lose modal */
.lose-content h2 { color: var(--neon-magenta) !important; text-shadow: 0 0 12px rgba(255,42,109,0.5); }

/* Screen shake */
@keyframes screenShake {
  0%, 100% { transform: translate(0); }
  10% { transform: translate(-4px, 2px); }
  20% { transform: translate(3px, -3px); }
  30% { transform: translate(-2px, 4px); }
  40% { transform: translate(4px, -1px); }
  50% { transform: translate(-3px, 3px); }
  60% { transform: translate(2px, -4px); }
  70% { transform: translate(-4px, 1px); }
  80% { transform: translate(3px, 3px); }
  90% { transform: translate(-1px, -2px); }
}
.shake { animation: screenShake 0.4s ease-out; }

/* Cell reveal flash */
@keyframes cellReveal {
  0% { background: rgba(0,240,255,0.15); }
  100% { background: rgba(0,0,0,0.3); }
}
.cell.reveal-flash {
  animation: cellReveal 0.2s ease-out;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  body { padding: 4px 2px; }

  .electric-frame, #app {
    clip-path: polygon(0 6px, 6px 0, calc(100% - 6px) 0, 100% 6px, 100% calc(100% - 6px), calc(100% - 6px) 100%, 6px 100%, 0 calc(100% - 6px));
  }
  .electric-glow { display: none; }

  #app { padding: 12px 8px; }
  #app::before, #app::after { display: none; }

  header {
    flex-direction: column;
    gap: 6px;
    text-align: center;
    margin-bottom: 12px;
    padding-bottom: 10px;
  }
  header h1 { font-size: 16px; letter-spacing: 2px; }

  #controls { gap: 4px; margin-bottom: 10px; }
  .diff-btn, .icon-btn { padding: 6px 8px; font-size: 11px; }

  #game-info {
    padding: 8px 12px;
    font-size: 18px;
    margin-bottom: 10px;
  }
  #reset-btn { font-size: 24px; }

  #game-stats { gap: 12px; font-size: 9px; margin-bottom: 10px; }

  /* 棋盘允许横向滚动 */
  #board-container { overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* 弹窗适配 */
  .modal-content { min-width: unset; max-width: 92vw; padding: 20px 14px; }
  .rank-content { min-width: unset; max-width: 95vw; }
  .donate-content { min-width: unset; max-width: 92vw; }
  .win-time-display { font-size: 32px !important; }

  #rank-scope-tabs, #rank-tabs { flex-wrap: wrap; }
  .scope-tab { padding: 5px 10px; font-size: 11px; }
  .rank-tab { padding: 3px 10px; font-size: 10px; }
  #rank-table th, #rank-table td { padding: 5px 4px; font-size: 11px; }
  #rank-table-wrap { max-height: 50vh; }

  .donate-qr-img { width: 160px; height: 160px; }
}

@media (max-width: 400px) {
  header h1 { font-size: 13px; letter-spacing: 1px; }
  .diff-btn, .icon-btn { padding: 5px 6px; font-size: 10px; }
  #game-info { padding: 6px 8px; font-size: 16px; }
  #reset-btn { font-size: 22px; }
  .donate-qr-img { width: 140px; height: 140px; }
}

/* ===== Reduce motion ===== */
@media (prefers-reduced-motion: reduce) {
  .electric-frame, .electric-glow { animation: none !important; }
}

/* ===== Glitch flicker on title (subtle) ===== */
@keyframes glitch {
  0%, 95%, 100% { opacity: 1; }
  96% { opacity: 0.8; transform: translateX(-1px); }
  97% { opacity: 1; transform: translateX(1px); }
  98% { opacity: 0.9; transform: translateX(0); }
}

header h1 {
  animation: glitch 8s ease-in-out infinite;
}