/* ============ Tokens ============ */
:root{
  --bg: #141210;
  --bg-2: #100E0C;
  --surface: rgba(212,175,55,0.04);
  --surface-2: rgba(212,175,55,0.075);
  --surface-3: rgba(212,175,55,0.11);
  --line: rgba(212,175,55,0.10);
  --line-soft: rgba(212,175,55,0.055);

  --accent: #D4AF37;
  --accent-dim: #A6874A;
  --accent-soft: #E4CE97;
  --accent-2: #7C8CF8;
  --accent-2-dim: #5D6BD1;
  --danger: #E8735F;

  --text: #F4EFEA;
  --text-dim: #ABA7A0;
  --text-faint: #726E68;

  --radius-xl: 32px;
  --radius-lg: 26px;
  --radius-md: 18px;
  --radius-sm: 13px;
  --radius-pill: 999px;

  --shadow-1: 0 1px 2px rgba(0,0,0,0.25);
  --shadow-2: 0 8px 24px -8px rgba(0,0,0,0.45), 0 2px 6px rgba(0,0,0,0.3);
  --shadow-3: 0 24px 60px -20px rgba(0,0,0,0.6), 0 8px 20px -8px rgba(0,0,0,0.45);
  --shadow-glow: 0 0 0 1px rgba(212,175,55,0.18), 0 12px 32px -12px rgba(212,175,55,0.28);

  --font-head: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Albert Sans", ui-sans-serif, system-ui, sans-serif;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background:
    radial-gradient(1100px 700px at 88% -12%, rgba(212,175,55,0.10) 0%, transparent 60%),
    radial-gradient(900px 600px at 6% 4%, rgba(212,175,55,0.07) 0%, transparent 55%),
    var(--bg) fixed;
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1,h2,h3{ font-family: var(--font-head); margin:0; letter-spacing: -0.015em; font-weight:600; }
p{ margin: 0; }
button{ font-family: inherit; }
.muted{ color: var(--text-dim); line-height:1.5; }
.small{ font-size: 0.85rem; }
.is-hidden{ display:none !important; }

::selection{ background: rgba(212,175,55,0.35); color: var(--text); }

/* Custom scrollbar */
::-webkit-scrollbar{ width: 8px; height: 8px; }
::-webkit-scrollbar-track{ background: transparent; }
::-webkit-scrollbar-thumb{ background: rgba(212,175,55,0.15); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover{ background: rgba(212,175,55,0.25); }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ============ Layout shell ============ */
.shell{
  display:grid;
  grid-template-columns: 244px 1fr;
  min-height: 100vh;
}

/* ============ Sidebar ============ */
.sidebar{
  background: linear-gradient(180deg, rgba(212,175,55,0.03), transparent 40%), var(--bg-2);
  border-right: 1px solid var(--line-soft);
  padding: 24px 16px;
  display:flex;
  flex-direction:column;
  position: sticky;
  top:0;
  height:100vh;
}
.brand{ display:flex; align-items:center; gap:10px; padding: 4px 8px 28px; }
.brand-name{ font-family: var(--font-head); font-weight:600; font-size:1.25rem; letter-spacing:-0.02em; }

.nav{ display:flex; flex-direction:column; gap:4px; }
.nav-item{
  display:flex; align-items:center; gap:11px;
  background:none; border:none; color: var(--text-dim);
  text-align:left; padding: 11px 14px; border-radius: var(--radius-md);
  font-size: 0.95rem; font-weight:600; cursor:pointer;
  transition: background .2s var(--ease-out), color .2s var(--ease-out), transform .15s var(--ease-out);
}
.nav-item:hover{ background: var(--surface); color: var(--text); transform: translateX(2px); }
.nav-item.is-active{ background: var(--surface-2); color: var(--accent-soft); box-shadow: inset 0 0 0 1px var(--line); }
.nav-item.is-active svg{ color: var(--accent); }
.nav-item:active{ transform: scale(0.98); }
.nav-item .nav-badge{
  margin-left:auto; font-size:0.65rem; font-weight:800; letter-spacing:0.03em;
  background: linear-gradient(135deg, var(--accent-2), var(--accent-2-dim)); color:#fff;
  padding: 2px 7px; border-radius: var(--radius-pill);
}

.sidebar-foot{ margin-top:auto; padding: 10px 8px 0; }
.foot-note{ font-size: 0.72rem; color: var(--text-faint); line-height:1.5; }

/* ============ Main ============ */
.main{ padding: 28px 36px 64px; min-width:0; }

.topbar{
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom: 24px; gap: 20px; flex-wrap:wrap;
}
.topbar-title{ font-family: var(--font-head); font-size:1.7rem; font-weight:600; letter-spacing:-0.02em; }
.topbar-stats{ display:flex; align-items:center; gap:10px; }
.stat-pill{
  display:flex; align-items:center; gap:6px;
  background: var(--surface); border:1px solid var(--line);
  padding: 8px 14px; border-radius: var(--radius-pill); font-weight:600; font-size:0.88rem;
  box-shadow: var(--shadow-1);
  backdrop-filter: blur(8px);
  transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
.stat-pill:hover{ border-color: var(--accent-dim); box-shadow: var(--shadow-glow); }
.profile-chip{
  display:flex; align-items:center; gap:8px;
  background: var(--surface-2); border:1px solid var(--line);
  padding: 5px 16px 5px 5px; border-radius: var(--radius-pill); cursor:pointer; color: var(--text);
  font-weight:600; font-size:0.9rem;
  transition: border-color .2s var(--ease-out), transform .2s var(--ease-out);
}
.profile-chip:hover{ border-color: var(--accent-dim); transform: translateY(-1px); }
.profile-chip:active{ transform: scale(0.97); }
.profile-avatar{
  width:28px; height:28px; border-radius:50%;
  background: linear-gradient(135deg, var(--accent-soft), var(--accent-dim)); color:#20160B; font-weight:800; font-size:0.82rem;
  display:flex; align-items:center; justify-content:center;
  box-shadow: var(--shadow-1);
}

/* ============ Filter chips ============ */
.filter-row{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom: 24px; }
.chip{
  background: var(--surface); border:1px solid var(--line); color: var(--text-dim);
  padding: 9px 18px; border-radius: var(--radius-pill); font-size:0.88rem; font-weight:600; cursor:pointer;
  transition: all .2s var(--ease-out);
}
.chip:hover{ border-color: var(--accent-dim); color: var(--text); transform: translateY(-1px); }
.chip.is-active{ background: linear-gradient(135deg, var(--accent-soft), var(--accent-dim)); color:#20160B; border-color: transparent; box-shadow: var(--shadow-1); }
.chip:active{ transform: scale(0.96); }

/* ============ Promo / widget banner ============ */
.promo-banner{
  position: relative; overflow:hidden;
  display:flex; align-items:center; justify-content:space-between; gap: 24px; flex-wrap:wrap;
  background:
    radial-gradient(500px 260px at 90% 0%, rgba(212,175,55,0.22), transparent 65%),
    linear-gradient(135deg, #221F1A, #171512);
  border:1px solid var(--line); border-radius: var(--radius-xl);
  padding: 26px 30px; margin-bottom: 26px;
  box-shadow: var(--shadow-3);
}
/* Orbital vector graphic — concentric glowing rings */
.promo-banner::before{
  content:""; position:absolute; top:-60px; right:-60px;
  width:240px; height:240px; border-radius:50%;
  border:1px solid rgba(212,175,55,0.12);
  pointer-events:none;
}
.promo-banner::after{
  content:""; position:absolute; top:-30px; right:-30px;
  width:180px; height:180px; border-radius:50%;
  border:1px solid rgba(212,175,55,0.07);
  pointer-events:none;
}
.promo-text{ max-width: 480px; position:relative; z-index:1; }
.promo-eyebrow{
  display:inline-flex; align-items:center; gap:6px; font-size:0.72rem; font-weight:800; letter-spacing:0.06em;
  color: var(--accent); background: rgba(212,175,55,0.14); padding: 5px 11px; border-radius: var(--radius-pill);
}
.promo-title{ font-family: var(--font-head); font-size:1.55rem; font-weight:600; margin-top:12px; letter-spacing:-0.02em; }
.promo-sub{ color: var(--text-dim); margin-top:8px; line-height:1.55; font-size:0.94rem; }
.promo-cta{ display:flex; align-items:center; gap:10px; flex-shrink:0; position:relative; z-index:1; }
.board-preview{
  width: 96px; height: 96px; border-radius: var(--radius-md); flex-shrink:0;
  background: linear-gradient(145deg, #D4AF37, #8a6f3c);
  display:grid; grid-template-columns: repeat(5,1fr); grid-template-rows: repeat(5,1fr);
  padding: 8px; gap:3px; box-shadow: var(--shadow-2);
}
.board-preview i{ background: rgba(20,18,16,0.35); border-radius:3px; }
.board-preview i:nth-child(7),.board-preview i:nth-child(13),.board-preview i:nth-child(19),
.board-preview i:nth-child(11),.board-preview i:nth-child(15){ background:#141210; }
.board-preview i:nth-child(9),.board-preview i:nth-child(17){ background:#F4EFEA; }

/* ============ Game grid & cards ============ */
.game-grid{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(248px, 1fr));
  gap: 18px;
}
.game-card{
  background: linear-gradient(160deg, rgba(212,175,55,0.05), rgba(212,175,55,0.015));
  border:1px solid var(--line); border-radius: var(--radius-lg);
  overflow:hidden; cursor:pointer; text-align:left; color: var(--text); padding:0;
  display:flex; flex-direction:column;
  box-shadow: var(--shadow-2);
  transition: transform .25s var(--ease-out), border-color .25s var(--ease-out), box-shadow .25s var(--ease-out);
}
.game-card:hover{ transform: translateY(-5px); border-color: var(--accent-dim); box-shadow: var(--shadow-glow); }
.game-card:active{ transform: translateY(-2px) scale(0.99); }
.game-card:focus-visible{ outline: 2px solid var(--accent); outline-offset: 2px; }
.card-art{
  height: 124px; display:flex; align-items:center; justify-content:center;
  position:relative;
}
.card-art::after{
  content:""; position:absolute; inset:0;
  background: linear-gradient(180deg, transparent 40%, rgba(16,14,12,0.35));
}
.card-body{ padding: 16px 18px 18px; }
.card-cat{ font-size:0.72rem; font-weight:700; color: var(--accent); letter-spacing: 0.04em; }
.card-name{ font-family: var(--font-head); font-size:1.1rem; font-weight:600; margin-top:3px; letter-spacing:-0.01em; }
.card-skill{ font-size:0.82rem; color: var(--text-dim); margin-top:3px; }
.card-best{
  margin-top:12px; font-size:0.78rem; color: var(--text-faint);
  display:flex; justify-content:space-between; border-top:1px solid var(--line-soft); padding-top:10px;
}
.card-best b{ color: var(--accent-soft); }

/* ============ Panels (progress / leaderboard) ============ */
.panel{
  background: linear-gradient(160deg, rgba(212,175,55,0.045), rgba(212,175,55,0.01));
  border:1px solid var(--line); border-radius: var(--radius-xl);
  padding: 28px 30px; max-width: 960px;
  box-shadow: var(--shadow-2);
}
.panel h2{ font-size:1.35rem; }
.panel > p{ margin-top:6px; margin-bottom: 20px; }
.panel-head-row{ display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:10px; }

.progress-grid{ display:grid; grid-template-columns: repeat(auto-fill, minmax(210px,1fr)); gap:14px; margin-top: 12px;}
.progress-item{ background: var(--surface-2); border:1px solid var(--line-soft); border-radius: var(--radius-md); padding: 16px 18px; transition: border-color .2s var(--ease-out); }
.progress-item:hover{ border-color: var(--accent-dim); }
.progress-item .p-name{ font-weight:700; font-size:0.92rem; }
.progress-item .p-score{ font-family: var(--font-head); font-size:1.7rem; color: var(--accent-soft); margin-top:5px; }
.progress-item .p-sub{ font-size:0.78rem; color: var(--text-faint); }

.select{
  background: var(--surface-2); color: var(--text); border:1px solid var(--line);
  border-radius: var(--radius-sm); padding: 9px 14px; font-weight:600; font-size:0.86rem;
  transition: border-color .2s var(--ease-out);
}
.select:hover{ border-color: var(--accent-dim); }

table.board{ width:100%; border-collapse: collapse; margin-top: 16px; }
table.board th{
  text-align:left; font-size:0.72rem; text-transform: uppercase; letter-spacing:0.05em;
  color: var(--text-faint); font-weight:700; padding: 9px 12px; border-bottom:1px solid var(--line);
}
table.board td{ padding: 12px 12px; border-bottom:1px solid var(--line-soft); font-weight:600; font-size:0.94rem; }
table.board tr:last-child td{ border-bottom:none; }
table.board tr:hover td{ background: rgba(212,175,55,0.03); }
table.board td:first-child{ color: var(--text-faint); width:36px; }
.you-row td{ color: var(--accent-soft); }
.rating-badge{
  display:inline-block; font-size:0.72rem; font-weight:800; padding:2px 9px; border-radius: var(--radius-pill);
  background: rgba(124,140,248,0.16); color:#B7BEFB; margin-left:8px;
}

/* ============ Overlay / game stage ============ */
.overlay{
  position:fixed; inset:0; background: rgba(8,6,4,0.72); backdrop-filter: blur(6px);
  display:flex; align-items:center; justify-content:center; z-index: 50; padding: 20px;
  animation: overlayIn .2s var(--ease-out);
}
@keyframes overlayIn{ from{ opacity:0; } to{ opacity:1; } }
.overlay-panel{
  background: linear-gradient(165deg, #1B1815, #131011);
  border:1px solid var(--line); border-radius: var(--radius-xl);
  width: 100%; max-width: 760px; max-height: 92vh; overflow:auto;
  box-shadow: var(--shadow-3);
  animation: panelIn .3s var(--ease-spring);
}
@keyframes panelIn{ from{ opacity:0; transform: scale(0.96) translateY(8px); } to{ opacity:1; transform: scale(1) translateY(0); } }
.overlay-panel.small{ max-width: 400px; padding: 28px; }
.overlay-panel.wide{ max-width: 1040px; }
.overlay-head{
  display:flex; align-items:flex-start; justify-content:space-between;
  padding: 22px 24px 12px;
}
.overlay-eyebrow{ font-size:0.75rem; font-weight:700; color: var(--accent); }
.overlay-head h2{ font-size:1.3rem; margin-top:3px; letter-spacing:-0.01em; }
.icon-btn{
  background: var(--surface); border:1px solid var(--line); color: var(--text-dim);
  width:34px; height:34px; border-radius:50%; cursor:pointer; font-size:0.9rem;
  transition: all .2s var(--ease-out);
}
.icon-btn:hover{ color: var(--text); border-color: var(--accent-dim); transform: rotate(90deg); }
.overlay-stage{ padding: 8px 24px 28px; }

form#name-form{ display:flex; flex-direction:column; gap:12px; margin-top:16px; }
#name-input{
  background: var(--surface-2); border:1px solid var(--line); color: var(--text);
  padding: 12px 15px; border-radius: var(--radius-md); font-size:1rem;
  transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
#name-input:focus{ outline:none; border-color: var(--accent-dim); box-shadow: 0 0 0 3px rgba(212,175,55,0.1); }
.btn{
  border:none; border-radius: var(--radius-pill); padding: 12px 20px; font-weight:700;
  cursor:pointer; font-size:0.95rem; transition: transform .15s var(--ease-out), box-shadow .15s var(--ease-out), background .15s var(--ease-out);
}
.btn-primary{ background: linear-gradient(135deg, var(--accent-soft), var(--accent-dim)); color:#20160B; box-shadow: var(--shadow-1); }
.btn-primary:hover{ transform: translateY(-1px); box-shadow: var(--shadow-glow); }
.btn-primary:active{ transform: scale(0.97); }
.btn-accent2{ background: linear-gradient(135deg, #97A1FA, var(--accent-2-dim)); color:#0E0C17; box-shadow: var(--shadow-1); }
.btn-accent2:hover{ transform: translateY(-1px); box-shadow: 0 0 0 1px rgba(124,140,248,0.18), 0 12px 32px -12px rgba(124,140,248,0.28); }
.btn-accent2:active{ transform: scale(0.97); }
.btn-ghost{ background: var(--surface); color: var(--text); border:1px solid var(--line); }
.btn-ghost:hover{ border-color: var(--accent-dim); transform: translateY(-1px); }
.btn-ghost:active{ transform: scale(0.97); }
.btn:disabled{ opacity:0.45; cursor:not-allowed; transform:none !important; box-shadow:none !important; }

/* ============ Shared in-game UI ============ */
.game-hud{ display:flex; justify-content:space-between; align-items:center; margin-bottom: 18px; gap:10px; flex-wrap:wrap;}
.hud-metric{ background: var(--surface); border:1px solid var(--line); border-radius: var(--radius-pill); padding:7px 15px; font-weight:700; font-size:0.85rem; }
.hud-metric span{ color: var(--accent-soft); }
.game-instructions{ color: var(--text-dim); font-size:0.92rem; margin-bottom:16px; line-height:1.55; }
.game-canvas-wrap{ display:flex; align-items:center; justify-content:center; min-height: 320px; }
.game-result{ text-align:center; padding: 22px 0; }
.game-result .result-score{ font-family: var(--font-head); font-size:3.1rem; color: var(--accent-soft); margin: 8px 0; }
.result-actions{ display:flex; gap:10px; justify-content:center; margin-top: 20px; }

.countdown{
  font-family: var(--font-head); font-size: 4rem; font-weight:600; color: var(--accent-soft);
  display:flex; align-items:center; justify-content:center; min-height: 320px;
}

/* generic tile grid used by several games */
.tile-grid{ display:grid; gap:10px; justify-content:center; }
.tile{
  width: 78px; height: 78px; border-radius: var(--radius-md);
  border: 1px solid var(--line); background: var(--surface-2);
  display:flex; align-items:center; justify-content:center; cursor:pointer;
  font-size:1.4rem; font-weight:700; color: var(--text);
  transition: transform .12s var(--ease-out), background .15s var(--ease-out), box-shadow .15s var(--ease-out);
}
.tile:hover{ transform: scale(1.045); box-shadow: var(--shadow-1); }
.tile.lit{ background: linear-gradient(150deg, var(--accent-soft), var(--accent-dim)); color:#20160B; }
.tile.correct{ background: linear-gradient(150deg, var(--accent-soft), var(--accent-dim)); color:#20160B; }
.tile.wrong{ background: var(--danger); color:#2a1410; }
.tile.face-down{ background: linear-gradient(150deg, var(--surface-3), var(--surface-2)); }
.tile.matched{ background: linear-gradient(150deg, #97A1FA, var(--accent-2-dim)); color:#0E0C17; cursor:default; }

.big-target{
  width: 224px; height:224px; border-radius:50%;
  background: var(--surface-2); border:2px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-head); font-size:1.4rem; font-weight:600; color: var(--text-dim);
  cursor:pointer; user-select:none;
  box-shadow: var(--shadow-2);
  transition: background .12s var(--ease-out), border-color .12s var(--ease-out), transform .12s var(--ease-out);
}
.big-target.go{ background: linear-gradient(150deg, var(--accent-soft), var(--accent-dim)); color:#20160B; border-color: transparent; }
.big-target.wait{ background: var(--danger); color:#2a1410; border-color: transparent; }

.option-row{ display:flex; gap:10px; flex-wrap:wrap; justify-content:center; }
.option-btn{
  background: var(--surface-2); border:1px solid var(--line); color: var(--text);
  padding: 15px 22px; border-radius: var(--radius-md); font-size:1.1rem; font-weight:700; cursor:pointer;
  min-width: 70px; transition: all .15s var(--ease-out);
}
.option-btn:hover{ border-color: var(--accent-dim); transform: translateY(-1px); }
.option-btn:active{ transform: scale(0.97); }
.option-btn.correct{ background: linear-gradient(150deg, var(--accent-soft), var(--accent-dim)); color:#20160B; border-color: transparent; }
.option-btn.wrong{ background: var(--danger); color:#2a1410; border-color: transparent; }

.word-display{
  font-family: var(--font-head); font-size: 2.2rem; font-weight:600; letter-spacing: 0.08em;
  text-align:center; margin-bottom: 24px;
}
.text-input-row{ display:flex; gap:10px; justify-content:center; }
.text-input-row input{
  background: var(--surface-2); border:1px solid var(--line); color:var(--text);
  padding: 13px 15px; border-radius: var(--radius-md); font-size:1.1rem; width: 230px; text-align:center;
  transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
.text-input-row input:focus{ outline:none; border-color: var(--accent-dim); box-shadow: 0 0 0 3px rgba(212,175,55,0.1); }

/* ============ Gomoku ============ */
.gomoku-layout{ display:flex; gap: 26px; flex-wrap:wrap; align-items:flex-start; }

.gomoku-board-wrap{
  background:
    linear-gradient(145deg, rgba(255,245,214,.2), transparent 28%),
    linear-gradient(135deg, #d8b66d 0%, #c39a4f 48%, #a97832 100%);
  border:1px solid rgba(71,43,15,.4);
  border-radius:16px;
  padding:18px;
  box-shadow: 0 18px 38px rgba(24,14,4,.35), inset 0 1px 0 rgba(255,255,255,.28);
  flex-shrink:0;
}
.gomoku-board{
  width:min(560px, 78vw);
  aspect-ratio:1;
  display:grid;
  position:relative;
  overflow:hidden;
  border:1px solid rgba(71,43,15,.6);
  background:
    repeating-linear-gradient(0deg, transparent 0, transparent calc(6.666% - 1px), rgba(73,51,22,.72) calc(6.666% - 1px), rgba(73,51,22,.72) 6.666%),
    repeating-linear-gradient(90deg, transparent 0, transparent calc(6.666% - 1px), rgba(73,51,22,.72) calc(6.666% - 1px), rgba(73,51,22,.72) 6.666%),
    #d2a95d;
  box-shadow: inset 0 0 0 2px rgba(96,61,21,.16), inset 0 0 35px rgba(80,49,15,.18);
}
.gomoku-cell{ position:relative; display:flex; align-items:center; justify-content:center; cursor:pointer; min-width:0; min-height:0; }
.gomoku-star{
  width:8px;height:8px;border-radius:50%; background:#5d421d; position:absolute; z-index:1;
}
.gomoku-stone{
  width:82%; height:82%; border-radius:50%; pointer-events:none; position:relative; z-index:2;
  box-shadow:0 3px 5px rgba(44,25,7,.38), inset 0 -3px 5px rgba(0,0,0,.28), inset 0 2px 2px rgba(255,255,255,.25);
}
.gomoku-stone.black{ background:radial-gradient(circle at 32% 28%, #4d4d4b 0%, #171716 48%, #050504 100%); }
.gomoku-stone.white{ background:radial-gradient(circle at 30% 27%, #fffef7 0%, #e7e2d4 55%, #c6c1b3 100%); border:1px solid rgba(70,57,38,.45); }
.gomoku-stone.last-move::after{ content:""; position:absolute; left:50%; top:50%; width:5px; height:5px; transform:translate(-50%,-50%); background:#a84135; border-radius:50%; box-shadow:0 0 0 1px rgba(255,250,240,.45); }
.gomoku-cell.forbidden{ background:rgba(157,59,42,.11); }
.gomoku-cell.forbidden .forbidden-mark{ position:relative; z-index:3; color:#8f3b2d; font-weight:900; font-size:.75rem; pointer-events:none; text-shadow:0 1px rgba(255,240,210,.7); }

.gomoku-side{ flex:1 1 300px; min-width:280px; max-width:390px; display:flex; flex-direction:column; gap:14px; }
.gomoku-panel{ background:linear-gradient(180deg, rgba(212,175,55,.055), rgba(212,175,55,.03)); border:1px solid var(--line); border-radius:20px; padding:18px 20px; box-shadow:var(--shadow-2); }
.gomoku-panel h3{ font-size:1rem; margin-bottom:9px; }
.player-row{ display:flex; align-items:center; justify-content:space-between; padding: 8px 0; }
.player-row .p-tag{ display:flex; align-items:center; gap:8px; font-weight:700; font-size:0.92rem; }
.player-row .p-stone{ width:16px; height:16px; border-radius:50%; }
.player-row .p-stone.black{ background:radial-gradient(circle at 30% 25%, #4d4d4b, #090909 80%); }
.player-row .p-stone.white{ background:#eeeade; border:1px solid #8e8a80; }
.player-row.is-turn{ color: var(--accent-soft); }
.open-match-row{
  display:flex; align-items:center; justify-content:space-between; gap:8px; padding:10px 12px;
  background:rgba(212,175,55,.045); border:1px solid var(--line-soft); border-radius:12px; margin-bottom:8px; font-size:.86rem;
}
.gomoku-open-list{ margin-top:14px; max-height:220px; overflow:auto; }
.gomoku-chat-head{ display:flex; align-items:flex-start; justify-content:space-between; gap:10px; }
.chat-live-dot{ width:8px; height:8px; border-radius:50%; background:#69b487; margin-top:6px; box-shadow:0 0 0 4px rgba(105,180,135,.12); }
.gomoku-chat-list{ margin-top:14px; height:230px; overflow:auto; display:flex; flex-direction:column; gap:8px; padding-right:4px; }
.gomoku-chat-message{ padding:8px 10px; border:1px solid var(--line-soft); background:rgba(212,175,55,.035); border-radius:12px; }
.gomoku-chat-meta{ font-size:.72rem; font-weight:800; color:var(--accent-soft); margin-bottom:3px; }
.gomoku-chat-body{ font-size:.84rem; line-height:1.45; overflow-wrap:anywhere; }
.gomoku-chat-form{ display:grid; grid-template-columns:1fr auto; gap:8px; margin-top:10px; }
.gomoku-chat-form input{ min-width:0; background:var(--surface-2); border:1px solid var(--line); color:var(--text); padding:10px 11px; border-radius:12px; outline:none; transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out); }
.gomoku-chat-form input:focus{ border-color:var(--accent-dim); box-shadow:0 0 0 3px rgba(212,175,55,.1); }
.gomoku-chat-empty{ padding:34px 8px; text-align:center; }
.mode-toggle{ display:flex; gap:8px; margin-bottom:14px; }
.mode-toggle button{ flex:1; }

/* ============ Stable activity history ============ */
.history-panel{ margin-top:22px; padding-top:22px; border-top:1px solid var(--line-soft); }
.history-list{ display:flex; flex-direction:column; gap:8px; margin-top:14px; }
.history-row{ display:flex; align-items:center; justify-content:space-between; gap:14px; padding:12px 14px; border:1px solid var(--line-soft); background:rgba(212,175,55,.025); border-radius:14px; min-width:0; transition: border-color .2s var(--ease-out); }
.history-row:hover{ border-color: var(--accent-dim); }
.history-copy{ min-width:0; }
.history-title{ font-weight:700; }
.history-detail{ margin-top:3px; overflow-wrap:anywhere; }
.history-meta{ flex:0 0 auto; font-size:.78rem; color:var(--text-dim); white-space:nowrap; }
.history-empty{ padding:18px 8px; text-align:center; }

/* ============ Password gate ============ */
.site-gate{ z-index:2000; background:rgba(6,5,4,.92); backdrop-filter:blur(18px); }
.site-gate-panel{ text-align:center; box-shadow:0 28px 80px rgba(0,0,0,.58); }
.gate-mark{ width:44px; height:44px; margin:0 auto 12px; border-radius:14px; display:flex; align-items:center; justify-content:center; font-family:var(--font-head); font-weight:600; color:#241b0d; background:linear-gradient(145deg,var(--accent-soft),var(--accent-dim)); }
.gate-error{ min-height:1.3em; margin-top:8px; color:#ef9b88; }
#site-password-input{
  background: var(--surface-2); border:1px solid var(--line); color: var(--text);
  padding: 12px 15px; border-radius: var(--radius-md); font-size:1rem; width:100%;
  transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
#site-password-input:focus{ outline:none; border-color: var(--accent-dim); box-shadow: 0 0 0 3px rgba(212,175,55,0.1); }

/* ============ Responsive ============ */
@media (max-width: 860px){
  .shell{ grid-template-columns: 1fr; }
  .sidebar{ position:static; height:auto; flex-direction:row; align-items:center; padding: 14px 16px; }
  .brand{ padding: 0 12px 0 0; }
  .nav{ flex-direction:row; overflow-x:auto; }
  .sidebar-foot{ display:none; }
  .main{ padding: 20px 16px 50px; }
  .topbar-title{ font-size:1.3rem; }
  .promo-banner{ flex-direction:column; align-items:flex-start; }
  .promo-banner::before, .promo-banner::after{ display:none; }
  .gomoku-layout{ flex-direction:column; align-items:center; }
}