/* 六子棋 CSS — 翠绿主题 */

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Noto Sans SC', sans-serif;
  background: #1a1a2e;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #e0e0e0;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(16,185,129,0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(6,182,212,0.08) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.app-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1100px;
  padding: 20px 16px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.header { text-align: center; }
.header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  background: linear-gradient(135deg, #10b981, #06b6d4, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.header p {
  font-size: 0.8rem;
  color: #6b7280;
  margin-top: 4px;
  letter-spacing: 0.1em;
}

.control-panel {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 16px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 760px;
  backdrop-filter: blur(10px);
}

.ctrl-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ctrl-label {
  font-size: 0.75rem; color: #9ca3af; font-weight: 500;
  letter-spacing: 0.05em; white-space: nowrap;
}

.seg-btn {
  position: relative; display: flex;
  background: rgba(255,255,255,0.05);
  border-radius: 10px; border: 1px solid rgba(255,255,255,0.1);
  overflow: hidden;
}
.seg-btn button {
  padding: 6px 14px; font-size: 0.78rem; font-family: inherit;
  font-weight: 500; color: #9ca3af; background: transparent;
  border: none; cursor: pointer; transition: all 0.2s; white-space: nowrap;
}
.seg-btn button.active {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff; border-radius: 8px;
}
.seg-btn button:hover:not(.active) {
  color: #e0e0e0; background: rgba(255,255,255,0.06);
}

.icon-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 16px; font-size: 0.78rem; font-family: inherit;
  font-weight: 500; border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.12);
  cursor: pointer; transition: all 0.2s; white-space: nowrap;
}
.btn-restart {
  background: rgba(6,182,212,0.15); color: #06b6d4;
  border-color: rgba(6,182,212,0.3);
}
.btn-restart:hover { background: rgba(6,182,212,0.3); border-color: rgba(6,182,212,0.5); }
.btn-undo {
  background: rgba(245,158,11,0.1); color: #fbbf24;
  border-color: rgba(245,158,11,0.25);
}
.btn-undo:hover { background: rgba(245,158,11,0.2); border-color: rgba(245,158,11,0.4); }
.btn-undo:disabled { opacity: 0.35; cursor: not-allowed; }

.status-bar {
  display: flex; align-items: center; justify-content: center;
  gap: 12px; width: 100%; max-width: 760px;
}
.turn-indicator {
  display: flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px; padding: 10px 18px; flex: 1;
  backdrop-filter: blur(10px);
}
.stone-dot {
  width: 22px; height: 22px; border-radius: 50%;
  flex-shrink: 0; transition: all 0.3s;
}
.stone-dot.black {
  background: radial-gradient(circle at 35% 32%, #888, #111);
  box-shadow: 0 2px 8px rgba(0,0,0,0.6), inset 0 1px 2px rgba(255,255,255,0.15);
}
.stone-dot.white {
  background: radial-gradient(circle at 35% 32%, #fff, #ccc);
  box-shadow: 0 2px 8px rgba(0,0,0,0.4), inset 0 1px 2px rgba(255,255,255,0.8);
}
.turn-text { font-size: 0.85rem; font-weight: 500; color: #d1d5db; }
.turn-sub { font-size: 0.72rem; color: #6b7280; }

.score-panel { display: flex; gap: 10px; }
.score-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px; padding: 8px 16px;
  text-align: center; min-width: 70px;
  backdrop-filter: blur(10px);
}
.score-card .sc-label { font-size: 0.68rem; color: #6b7280; letter-spacing: 0.05em; }
.score-card .sc-val { font-size: 1.4rem; font-weight: 700; line-height: 1.2; }
.sc-black { color: #6ee7b7; }
.sc-white { color: #67e8f9; }

.game-area {
  display: flex; gap: 20px; align-items: flex-start;
  justify-content: center; width: 100%; flex-wrap: wrap;
}

.board-container {
  position: relative; border-radius: 12px; overflow: hidden;
  max-width: 100%;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.06),
    0 20px 60px rgba(0,0,0,0.6),
    0 0 80px rgba(16,185,129,0.05);
}
#boardCanvas { display: block; cursor: crosshair; max-width: 100%; height: auto; }

.side-panel { display: flex; flex-direction: column; gap: 12px; min-width: 180px; max-width: 220px; }
.panel-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px; padding: 14px 16px;
  backdrop-filter: blur(10px);
}
.panel-card h3 {
  font-size: 0.72rem; font-weight: 600; color: #6b7280;
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 10px;
}

.move-list {
  max-height: 300px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 3px;
}
.move-list::-webkit-scrollbar { width: 3px; }
.move-list::-webkit-scrollbar-track { background: transparent; }
.move-list::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.move-item {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 8px; border-radius: 7px;
  font-size: 0.75rem; transition: background 0.15s;
}
.move-item:last-child { background: rgba(16,185,129,0.15); }
.move-item .mi-num { font-size: 0.65rem; color: #6b7280; width: 20px; text-align: right; flex-shrink: 0; }
.mi-dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.mi-dot.black { background: radial-gradient(circle at 35% 30%, #888, #111); }
.mi-dot.white { background: radial-gradient(circle at 35% 30%, #fff, #ccc); border: 1px solid #aaa; }
.move-item .mi-coord { color: #d1d5db; font-weight: 500; }

.legend-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 0; border-bottom: 1px solid rgba(255,255,255,0.05);
}
.legend-row:last-child { border-bottom: none; }
.legend-name { display: flex; align-items: center; gap: 8px; font-size: 0.78rem; color: #d1d5db; }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; backdrop-filter: blur(6px);
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.modal-backdrop.show { opacity: 1; pointer-events: all; }
.modal-box {
  background: linear-gradient(145deg, #1e1b4b, #1a1a2e);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px; padding: 36px 40px;
  text-align: center; max-width: 380px; width: 90%;
  box-shadow: 0 30px 80px rgba(0,0,0,0.7), 0 0 0 1px rgba(16,185,129,0.2);
  transform: scale(0.9) translateY(10px); transition: transform 0.3s;
}
.modal-backdrop.show .modal-box { transform: scale(1) translateY(0); }
.modal-icon { font-size: 3.5rem; margin-bottom: 12px; line-height: 1; }
.modal-title {
  font-size: 1.5rem; font-weight: 700;
  background: linear-gradient(135deg, #10b981, #06b6d4);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: 8px;
}
.modal-desc { font-size: 0.9rem; color: #9ca3af; line-height: 1.6; margin-bottom: 24px; }
.modal-desc strong { color: #d1d5db; }
.modal-actions { display: flex; gap: 12px; justify-content: center; }
.modal-btn {
  padding: 10px 28px; border-radius: 10px; border: none;
  font-family: inherit; font-size: 0.88rem; font-weight: 600;
  cursor: pointer; transition: all 0.2s; letter-spacing: 0.03em;
}
.modal-btn-primary {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff; box-shadow: 0 4px 15px rgba(5,150,105,0.4);
}
.modal-btn-primary:hover {
  background: linear-gradient(135deg, #34d399, #10b981);
  box-shadow: 0 6px 20px rgba(5,150,105,0.5); transform: translateY(-1px);
}
.modal-btn-secondary {
  background: rgba(255,255,255,0.06); color: #9ca3af;
  border: 1px solid rgba(255,255,255,0.1);
}
.modal-btn-secondary:hover { background: rgba(255,255,255,0.1); color: #d1d5db; }
.modal-btn-undo {
  background: rgba(245,158,11,0.2); color: #fbbf24;
  border: 1px solid rgba(245,158,11,0.3);
}
.modal-btn-undo:hover {
  background: rgba(245,158,11,0.35); border-color: rgba(245,158,11,0.5);
  transform: translateY(-1px);
}

.diff-dots { display: flex; gap: 4px; }
.diff-dot { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,0.15); }
.diff-dot.on { background: #10b981; }

@media (max-width: 680px) {
  .header h1 { font-size: 1.6rem; }
  .side-panel { display: none; }
  .control-panel { gap: 8px; }
}