/* ── Variables ──────────────────────────────────────────────────────────── */
:root {
  --bg: #0d0d0d;
  --panel: #141414;
  --border: #2a2a2a;
  --x-color: #ff4d4d;
  --o-color: #4daaff;
  --active-glow: #ffe066;
  --won-x: rgba(255,77,77,0.13);
  --won-o: rgba(77,170,255,0.13);
  --text: #e8e8e8;
  --muted: #888;
  --cell-size: 44px;
  --bg-tint: transparent;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow-x: hidden;
  transition: background 0.6s ease;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(255,77,77,0.04) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(77,170,255,0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* Turn tint overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--bg-tint);
  pointer-events: none;
  z-index: 0;
  transition: background 0.5s ease;
}

.hidden { display: none !important; }

/* ── HTP Trigger ─────────────────────────────────────────────────────────── */
.htp-trigger {
  position: fixed;
  bottom: 20px; right: 20px;
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 10px 18px;
  background: var(--panel);
  border: 1px solid rgba(255,224,102,0.4);
  color: var(--active-glow);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
  z-index: 50;
  box-shadow: 0 0 12px rgba(255,224,102,0.1);
}
.htp-trigger:hover {
  border-color: var(--active-glow);
  background: rgba(255,224,102,0.08);
  box-shadow: 0 0 20px rgba(255,224,102,0.2);
  transform: translateY(-1px);
}

/* Mobile-only HTP button inside the controls row */
.htp-mobile-btn {
  display: none; /* hidden on desktop, shown on mobile via media query */
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 10px 18px;
  background: var(--panel);
  border: 1px solid rgba(255,224,102,0.4);
  color: var(--active-glow);
  border-radius: 4px; cursor: pointer; transition: all 0.2s;
  box-shadow: 0 0 12px rgba(255,224,102,0.1);
}
.htp-mobile-btn:hover {
  border-color: var(--active-glow);
  background: rgba(255,224,102,0.08);
  box-shadow: 0 0 20px rgba(255,224,102,0.2);
}

/* ── HTP Modal ───────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.75);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; padding: 20px; backdrop-filter: blur(3px);
}
.modal-box {
  background: #161616; border: 1px solid #333; border-radius: 8px;
  padding: 36px 36px 30px; max-width: 420px; width: 100%;
  position: relative; animation: modalIn 0.2s ease-out;
  max-height: 90vh; overflow-y: auto;
}
@keyframes modalIn {
  from { transform: scale(0.94); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}
.modal-close {
  position: absolute; top: 14px; right: 16px;
  background: none; border: none; color: var(--muted);
  font-size: 0.9rem; cursor: pointer; padding: 4px 8px; letter-spacing: 0;
}
.modal-close:hover { color: var(--text); background: none; }
.modal-title {
  font-family: 'Bebas Neue', sans-serif; font-size: 1.8rem;
  letter-spacing: 0.12em; color: var(--active-glow); margin-bottom: 24px;
}
.htp-section { margin-bottom: 18px; }
.htp-tag { font-size: 0.58rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); margin-bottom: 5px; }
.htp-section p { font-size: 0.72rem; color: #bbb; line-height: 1.7; letter-spacing: 0.03em; }
.htp-section em { color: var(--text); font-style: normal; font-weight: 700; }
.htp-example { margin-top: 8px; background: #1a1a1a; border-left: 2px solid var(--active-glow); padding: 8px 12px; font-size: 0.66rem; color: #999; line-height: 1.6; border-radius: 0 3px 3px 0; }
.hx { color: var(--active-glow); }
.htp-legend { border-top: 1px solid var(--border); padding-top: 14px; margin-top: 4px; display: flex; flex-direction: column; gap: 7px; }
.legend-item { display: flex; align-items: center; gap: 9px; font-size: 0.62rem; color: var(--muted); letter-spacing: 0.06em; }
.legend-dot { width: 12px; height: 12px; border-radius: 2px; flex-shrink: 0; }
.legend-dot.glow  { border: 2px solid var(--active-glow); box-shadow: 0 0 6px rgba(255,224,102,0.4); }
.legend-dot.faint { border: 2px solid rgba(255,224,102,0.35); }

/* ── Auth inputs ─────────────────────────────────────────────────────────── */
.auth-input {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  background: #0d0d0d;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 11px 14px;
  border-radius: 3px;
  outline: none;
  width: 100%;
  transition: border-color 0.15s;
}
.auth-input::placeholder { color: #555; font-size: 0.68rem; letter-spacing: 0.12em; }
.auth-input:focus { border-color: var(--active-glow); }

.auth-username-chip {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.15em;
  color: var(--active-glow);
  margin-bottom: 16px;
  text-align: center;
}

/* ── Lobby ───────────────────────────────────────────────────────────────── */
#lobby-screen {
  display: flex; align-items: center; justify-content: center; width: 100%;
  position: relative; z-index: 1;
}
.lobby-box {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 24px 24px 20px; text-align: center; width: 100%; max-width: 380px;
}
.lobby-box h1 { display: none; } /* replaced by .game-title */

/* ── Game Title ──────────────────────────────────────────────────────────── */
.game-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  margin-bottom: 4px;
}

.title-main {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2.2rem;
  letter-spacing: 0.1em;
  background: linear-gradient(135deg, var(--x-color), var(--active-glow));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1;
}

.title-two {
  display: block;
  text-align: center;
  background: linear-gradient(135deg, var(--active-glow), var(--o-color));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.title-two-inner {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 2.8rem;
  letter-spacing: 0.04em;
  line-height: 1;
}
.subtitle { font-size: 0.62rem; color: var(--muted); letter-spacing: 0.25em; text-transform: uppercase; margin-top: 2px; margin-bottom: 14px; }

/* Username prompt */
.username-prompt { display: flex; flex-direction: column; align-items: center; gap: 0; }
#username-input, .join-row input {
  font-family: 'Bebas Neue', sans-serif; font-size: 1.1rem; letter-spacing: 0.2em;
  text-transform: uppercase; background: #0d0d0d; border: 1px solid var(--border);
  color: var(--text); padding: 11px 14px; border-radius: 3px;
  outline: none; text-align: center; transition: border-color 0.15s; width: 100%;
}
#username-input::placeholder { color: #555; font-size: 0.8rem; letter-spacing: 0.15em; }
#username-input:focus { border-color: var(--active-glow); }
.join-row input::placeholder { color: #555; font-size: 0.8rem; letter-spacing: 0.2em; }
.join-row input:focus { border-color: var(--o-color); }

/* Username display chip */
/* username-display (moved above in rating section) */

/* Buttons */
button {
  font-family: 'Space Mono', monospace; font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase; padding: 9px 22px;
  border: 1px solid var(--border); background: var(--panel); color: var(--muted);
  cursor: pointer; border-radius: 3px; transition: all 0.15s;
}
button:hover { border-color: var(--text); color: var(--text); background: #1e1e1e; }

.lobby-btn { font-size: 0.72rem; letter-spacing: 0.14em; padding: 10px 24px; white-space: nowrap; }
.lobby-btn:hover { border-color: var(--text); color: var(--text); background: #1e1e1e; }

.lobby-btn.quickmatch {
  width: 100%; padding: 14px; font-size: 0.8rem;
  border-color: var(--x-color); color: var(--x-color); background: rgba(255,77,77,0.05);
}
.lobby-btn.quickmatch:hover { background: rgba(255,77,77,0.12); box-shadow: 0 0 20px rgba(255,77,77,0.12); }

.lobby-btn.primary {
  width: 100%; padding: 12px; font-size: 0.76rem;
  border-color: var(--active-glow); color: var(--active-glow);
}
.lobby-btn.primary:hover { background: rgba(255,224,102,0.07); }

/* ── Mode tile grid ──────────────────────────────────────────────────────── */
.mode-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  width: 100%;
  margin-bottom: 10px;
}

.mode-tile {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 4px; padding: 14px 8px; border-radius: 6px; cursor: pointer;
  background: #0d0d0d; border: 1px solid var(--border);
  transition: all 0.15s; text-align: center;
}
.mode-tile:hover { background: #161616; transform: translateY(-1px); }

.tile-icon  { font-size: 1.4rem; line-height: 1; }
.tile-label { font-family: 'Space Mono', monospace; font-size: 0.64rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.tile-sub   { font-size: 0.52rem; letter-spacing: 0.08em; color: var(--muted); }

.tile-quick   { border-color: rgba(255,77,77,0.4);  }
.tile-quick   .tile-label { color: var(--x-color); }
.tile-quick:hover { border-color: var(--x-color); box-shadow: 0 0 12px rgba(255,77,77,0.12); }

.tile-private { border-color: rgba(255,224,102,0.3); }
.tile-private .tile-label { color: var(--active-glow); }
.tile-private:hover { border-color: var(--active-glow); box-shadow: 0 0 12px rgba(255,224,102,0.1); }

.tile-cpu     { border-color: rgba(167,139,250,0.4); }
.tile-cpu     .tile-label { color: #a78bfa; }
.tile-cpu:hover { border-color: #a78bfa; box-shadow: 0 0 12px rgba(167,139,250,0.12); }

.tile-pnp     { border-color: rgba(77,170,255,0.4);  }
.tile-pnp     .tile-label { color: var(--o-color); }
.tile-pnp:hover { border-color: var(--o-color); box-shadow: 0 0 12px rgba(77,170,255,0.12); }

/* ── CPU picker ──────────────────────────────────────────────────────────── */
.cpu-picker {
  width: 100%; background: #0d0d0d; border: 1px solid #333;
  border-radius: 6px; padding: 14px; margin-bottom: 4px;
  animation: fadeIn 0.15s ease-out;
}
.cpu-picker-label {
  font-size: 0.55rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 8px; text-align: center;
}
.cpu-side-row {
  display: flex; align-items: center; justify-content: center; gap: 16px; margin-bottom: 4px;
}
.cpu-side-btn {
  font-family: 'Bebas Neue', sans-serif; font-size: 1.8rem; letter-spacing: 0.1em;
  width: 56px; height: 56px; border-radius: 6px; cursor: pointer;
  transition: all 0.15s; background: var(--panel);
}
.cpu-side-btn.x-side { border: 2px solid rgba(255,77,77,0.4); color: var(--x-color); }
.cpu-side-btn.x-side:hover,
.cpu-side-btn.x-side.selected { border-color: var(--x-color); background: rgba(255,77,77,0.1); box-shadow: 0 0 12px rgba(255,77,77,0.2); }
.cpu-side-btn.o-side { border: 2px solid rgba(77,170,255,0.4); color: var(--o-color); }
.cpu-side-btn.o-side:hover,
.cpu-side-btn.o-side.selected { border-color: var(--o-color); background: rgba(77,170,255,0.1); box-shadow: 0 0 12px rgba(77,170,255,0.2); }
.cpu-side-vs { font-size: 0.6rem; color: var(--muted); letter-spacing: 0.1em; }

.cpu-diff-row {
  display: flex; gap: 6px; width: 100%;
}

.diff-btn {
  flex: 1; font-family: 'Space Mono', monospace;
  font-size: 0.6rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 7px 4px; border-radius: 3px; cursor: pointer; transition: all 0.15s;
}
.diff-btn:nth-child(1) { border: 1px solid #4dff91; color: #4dff91; background: rgba(77,255,145,0.05); }
.diff-btn:nth-child(1):hover { background: rgba(77,255,145,0.14); }
.diff-btn:nth-child(2) { border: 1px solid var(--active-glow); color: var(--active-glow); background: rgba(255,224,102,0.05); }
.diff-btn:nth-child(2):hover { background: rgba(255,224,102,0.12); }
.diff-btn:nth-child(3) { border: 1px solid var(--x-color); color: var(--x-color); background: rgba(255,77,77,0.05); }
.diff-btn:nth-child(3):hover { background: rgba(255,77,77,0.12); }

/* ── Private picker ──────────────────────────────────────────────────────── */
.private-picker {
  width: 100%; margin-bottom: 4px;
  animation: fadeIn 0.15s ease-out;
}

.lobby-btn.local {
  width: 100%; padding: 14px; font-size: 0.8rem;
  border-color: var(--o-color); color: var(--o-color); background: rgba(77,170,255,0.05);
}
.lobby-btn.local:hover { background: rgba(77,170,255,0.12); }

.lobby-btn.small { font-size: 0.62rem; padding: 7px 16px; }

.mode-group { display: flex; flex-direction: column; align-items: center; gap: 0; }
.mode-label { font-size: 0.56rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.mode-divider { border-top: 1px solid var(--border); width: 100%; margin: 20px 0; }
.lobby-or { color: var(--muted); font-size: 0.6rem; letter-spacing: 0.15em; margin: 10px 0; }
.join-row { display: flex; gap: 8px; width: 100%; }
.lobby-error { color: var(--x-color); font-size: 0.62rem; letter-spacing: 0.08em; min-height: 18px; margin-top: 12px; }
.lobby-hint-small { font-size: 0.57rem; color: var(--muted); letter-spacing: 0.08em; margin-top: 7px; }

/* Searching / waiting */
.searching-icon { font-size: 2.4rem; margin-bottom: 14px; animation: searchPulse 1.2s ease-in-out infinite; }
@keyframes searchPulse { 0%,100%{opacity:0.4;transform:scale(0.9)} 50%{opacity:1;transform:scale(1.1)} }
.waiting-label { font-size: 0.6rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.room-code { font-family:'Bebas Neue',sans-serif; font-size:3rem; letter-spacing:0.4em; color:var(--active-glow); background:#0d0d0d; border:1px solid var(--border); border-radius:4px; padding:12px 20px; margin-bottom:14px; text-shadow:0 0 20px rgba(255,224,102,0.3); }
.waiting-sub { font-size:0.62rem; color:var(--muted); letter-spacing:0.08em; margin-bottom:20px; line-height:1.6; }
.waiting-dots { font-size:0.68rem; color:var(--muted); letter-spacing:0.1em; margin-bottom:22px; }
.dots { display:inline-block; width:24px; text-align:left; }

/* ── Game Layout ─────────────────────────────────────────────────────────── */
#game-screen {
  width: 100%; display: flex; flex-direction: column; align-items: center;
  position: relative; z-index: 1;
}

.game-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 14px;
}

/* Desktop: side-by-side */
@media (min-width: 900px) {
  #game-screen { justify-content: center; min-height: 100vh; }

  .game-layout {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 28px;
    max-width: 1100px;
    padding: 20px;
  }

  .game-panel {
    width: 200px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .game-center { flex-shrink: 0; }

  .htp-trigger { bottom: 20px; right: 20px; }
}

/* ── Panels ──────────────────────────────────────────────────────────────── */
.game-panel { display: flex; flex-direction: column; gap: 12px; }

.panel-title {
  font-family: 'Bebas Neue', sans-serif; font-size: 1rem;
  letter-spacing: 0.15em; color: var(--muted); text-transform: uppercase;
}

/* Player card */
.player-card {
  display: flex; align-items: center; gap: 10px;
  background: var(--panel); border: 2px solid var(--border);
  border-radius: 6px; padding: 12px 14px;
  transition: border-color 0.4s, box-shadow 0.4s;
}

.player-card.active-x {
  border-color: var(--x-color);
  box-shadow: 0 0 14px rgba(255,77,77,0.2);
}
.player-card.active-o {
  border-color: var(--o-color);
  box-shadow: 0 0 14px rgba(77,170,255,0.2);
}

.pc-symbol {
  font-family: 'Bebas Neue', sans-serif; font-size: 2rem; line-height: 1; flex-shrink: 0;
}
.pc-symbol.x { color: var(--x-color); }
.pc-symbol.o { color: var(--o-color); }

.pc-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; }

.pc-name {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 120px;
}

.pc-wins { font-size: 0.58rem; color: var(--muted); letter-spacing: 0.1em; }

/* Room info bar */
.room-info-bar {
  font-size: 0.58rem; letter-spacing: 0.12em; color: var(--muted);
  text-transform: uppercase; padding: 6px 10px;
  border: 1px solid var(--border); border-radius: 3px;
  background: var(--panel); text-align: center;
}

/* Controls vertical (desktop panel) */
.controls-vertical {
  display: flex; flex-direction: column; gap: 10px;
}
.controls-vertical button { width: 100%; }

/* ── Game Center ─────────────────────────────────────────────────────────── */
.game-center { display: flex; flex-direction: column; align-items: center; gap: 14px; }

/* Status bar */
.status-bar {
  display: flex; align-items: center; justify-content: center;
  background: var(--panel); border: 1px solid var(--border);
  padding: 10px 20px; border-radius: 4px;
  min-width: 280px; width: 100%;
}

.player-indicator { display: flex; align-items: center; gap: 8px; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.player-symbol { font-family: 'Bebas Neue', sans-serif; font-size: 1.4rem; line-height: 1; }
.player-symbol.x { color: var(--x-color); }
.player-symbol.o { color: var(--o-color); }

.win-banner { font-family: 'Bebas Neue', sans-serif; font-size: 1.6rem; letter-spacing: 0.1em; animation: pulse 0.8s ease-in-out infinite alternate; }
@keyframes pulse { from{opacity:0.7;transform:scale(0.97)} to{opacity:1;transform:scale(1.02)} }

.pnp-flash { animation: flashTurn 0.4s ease-out; }
@keyframes flashTurn { 0%{background:rgba(255,224,102,0.08)} 100%{background:transparent} }

/* ── Outer grid ──────────────────────────────────────────────────────────── */
.outer-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 10px; padding: 12px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 6px; position: relative;
}

.inner-board {
  position: relative; background: #111; border: 2px solid var(--border);
  border-radius: 4px; padding: 6px;
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}
.inner-board.active-board { border-color: var(--active-glow); box-shadow: 0 0 16px rgba(255,224,102,0.18), inset 0 0 8px rgba(255,224,102,0.04); }
.inner-board.won-x     { background: var(--won-x); border-color: var(--x-color); }
.inner-board.won-o     { background: var(--won-o); border-color: var(--o-color); }
.inner-board.drawn     { background: #1a1a1a; border-color: #333; }
.inner-board.any-valid { border-color: rgba(255,224,102,0.35); }

.cell-grid { display: grid; grid-template-columns: repeat(3, var(--cell-size)); grid-template-rows: repeat(3, var(--cell-size)); gap: 3px; }

.cell {
  width: var(--cell-size); height: var(--cell-size);
  display: flex; align-items: center; justify-content: center;
  background: #0d0d0d; border: 1px solid #222; border-radius: 3px;
  cursor: pointer; font-family: 'Bebas Neue', sans-serif; font-size: 1.4rem;
  transition: background 0.15s, transform 0.1s;
  position: relative; overflow: hidden; user-select: none;
}
.cell:hover:not(.taken):not(.board-finished) { background: #1e1e1e; transform: scale(1.04); }
.cell.taken   { cursor: default; }
.cell.x-cell  { color: var(--x-color); }
.cell.o-cell  { color: var(--o-color); }
.cell.winning-cell::after { content:''; position:absolute; inset:0; border-radius:3px; background:currentColor; opacity:0.12; }

.cell.last-move {
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.35);
  background: #1a1a1a;
}
.cell.last-move.x-cell { box-shadow: inset 0 0 0 2px rgba(255,77,77,0.6); background: rgba(255,77,77,0.08); }
.cell.last-move.o-cell { box-shadow: inset 0 0 0 2px rgba(77,170,255,0.6); background: rgba(77,170,255,0.08); }

.board-overlay { position:absolute; inset:6px; display:flex; align-items:center; justify-content:center; pointer-events:none; z-index:2; opacity:0; transition:opacity 0.3s; }
.inner-board.won-x .board-overlay,
.inner-board.won-o .board-overlay,
.inner-board.drawn .board-overlay { opacity:1; pointer-events:all; }

.board-overlay-symbol { font-family:'Bebas Neue',sans-serif; font-size:3.8rem; line-height:1; opacity:0.55; text-shadow:0 0 30px currentColor; animation:popIn 0.35s cubic-bezier(0.34,1.56,0.64,1) forwards; }
.board-overlay-symbol.x    { color: var(--x-color); }
.board-overlay-symbol.o    { color: var(--o-color); }
.board-overlay-symbol.draw { color:#444; font-size:1.8rem; letter-spacing:0.05em; }

@keyframes popIn { from{transform:scale(0.4);opacity:0} to{transform:scale(1);opacity:0.55} }
@keyframes placePop { 0%{transform:scale(0);opacity:0} 70%{transform:scale(1.15)} 100%{transform:scale(1);opacity:1} }
.cell.just-placed .cell-symbol { animation:placePop 0.22s ease-out forwards; display:inline-block; }

/* ── Hint ────────────────────────────────────────────────────────────────── */
.hint { font-size:0.58rem; color:#666; letter-spacing:0.1em; text-align:center; max-width:420px; line-height:1.8; white-space: pre-line; }

/* ── Rating display ─────────────────────────────────────────────────────── */
.pc-rating {
  font-size: 0.52rem;
  letter-spacing: 0.08em;
  color: var(--active-glow);
  opacity: 0.8;
}

.username-display {
  font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--active-glow); border: 1px solid rgba(255,224,102,0.3);
  background: rgba(255,224,102,0.05); padding: 5px 14px; border-radius: 20px;
  margin-bottom: 12px; cursor: pointer; display: inline-block;
  transition: all 0.15s;
}
.username-display:hover { background: rgba(255,224,102,0.1); }
.username-display::before { content: "✎ "; opacity: 0.6; }

.lobby-rating-badge {
  font-family: 'Space Mono', monospace;
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-left: 6px;
  vertical-align: middle;
}
.lobby-rating-badge.guest-badge {
  color: #999;
  border: 1px solid #333;
  padding: 1px 6px;
  border-radius: 10px;
  font-size: 0.5rem;
}

/* Rating delta on end overlay */
.end-rating-delta {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.6rem; letter-spacing: 0.1em;
  margin-bottom: 16px;
  animation: endIconPop 0.4s cubic-bezier(0.34,1.56,0.64,1) 0.2s both;
}
.end-rating-delta.gain { color: #4dff91; }
.end-rating-delta.loss { color: var(--x-color); }
.end-rating-delta.none { color: var(--muted); font-size: 1rem; }

/* Leaderboard button */
.lobby-btn.guest-btn {
  border-color: var(--border);
  color: var(--muted);
  font-size: 0.76rem;
}
.lobby-btn.guest-btn:hover { border-color: var(--text); color: var(--text); }

.lobby-divider {
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
}

.guest-upgrade-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: rgba(255,224,102,0.06);
  border: 1px solid rgba(255,224,102,0.25);
  border-radius: 5px;
  padding: 10px 14px;
  margin-bottom: 12px;
  width: 100%;
  flex-wrap: wrap;
}

.guest-upgrade-text {
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  color: #bbb;
}
.guest-upgrade-text strong { color: var(--active-glow); font-weight: 700; }

.lobby-btn.leaderboard-btn {
  width: 100%; padding: 12px; font-size: 0.76rem;
  border-color: var(--active-glow); color: var(--active-glow);
  background: rgba(255,224,102,0.04);
}
.lobby-btn.leaderboard-btn:hover { background: rgba(255,224,102,0.1); }

/* ── Leaderboard Modal ───────────────────────────────────────────────────── */
.lb-modal-box { max-width: 480px; }

.lb-header-row {
  display: grid;
  grid-template-columns: 48px 1fr 72px 80px;
  gap: 0;
  padding: 6px 10px;
  font-size: 0.54rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

.lb-list { display: flex; flex-direction: column; gap: 2px; max-height: 60vh; overflow-y: auto; }

.lb-loading { text-align: center; color: var(--muted); font-size: 0.65rem; padding: 20px; letter-spacing: 0.1em; }

.lb-row {
  display: grid;
  grid-template-columns: 48px 1fr 72px 80px;
  align-items: center;
  padding: 9px 10px;
  border-radius: 4px;
  transition: background 0.1s;
}
.lb-row:hover { background: #1a1a1a; }
.lb-row.me { background: rgba(255,224,102,0.06); border: 1px solid rgba(255,224,102,0.2); }

.lb-col-rank {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.1rem; letter-spacing: 0.05em;
  color: var(--muted); line-height: 1;
}
.lb-col-rank.top1 { color: #ffd700; }
.lb-col-rank.top2 { color: #c0c0c0; }
.lb-col-rank.top3 { color: var(--bronze, #cd7f32); }

/* Name: allow full display, wrap if needed */
.lb-col-name {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.06em;
  word-break: break-all;
  padding-right: 6px;
  line-height: 1.3;
}

.lb-col-rating {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.1rem; letter-spacing: 0.05em;
  color: var(--active-glow); line-height: 1;
  text-align: right; padding-right: 8px;
}

.lb-col-record {
  font-size: 0.55rem; color: var(--muted);
  letter-spacing: 0.03em; text-align: right;
  line-height: 1.6;
}

.lb-col-record .w { color: #4dff91; }
.lb-col-record .l { color: var(--x-color); }

/* ── Inactivity timer ───────────────────────────────────────────────────── */
.inactivity-bar {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.inactivity-label {
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-align: right;
  text-transform: uppercase;
}

.inactivity-label.urgent { color: var(--x-color); }

.inactivity-track {
  width: 100%;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.inactivity-fill {
  height: 100%;
  width: 100%;
  background: var(--active-glow);
  border-radius: 2px;
  transition: width 1s linear, background 0.5s;
}

.inactivity-fill.urgent { background: var(--x-color); }

/* ── Win line ────────────────────────────────────────────────────────────── */
.outer-win-overlay { position:absolute; inset:0; pointer-events:none; z-index:10; }

/* ── End Overlay ─────────────────────────────────────────────────────────── */
.end-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.82);
  display: flex; align-items: center; justify-content: center;
  z-index: 200; backdrop-filter: blur(4px); animation: fadeIn 0.3s ease-out;
}
@keyframes fadeIn { from{opacity:0} to{opacity:1} }

.end-box {
  text-align: center; padding: 48px 48px 40px;
  background: #161616; border: 1px solid #333; border-radius: 10px;
  animation: endBoxIn 0.35s cubic-bezier(0.34,1.56,0.64,1);
  max-width: 340px; width: 90%;
}
@keyframes endBoxIn { from{transform:scale(0.8);opacity:0} to{transform:scale(1);opacity:1} }

.end-icon { font-size:3.2rem; margin-bottom:12px; animation:endIconPop 0.5s cubic-bezier(0.34,1.56,0.64,1) 0.1s both; }
@keyframes endIconPop { from{transform:scale(0);opacity:0} to{transform:scale(1);opacity:1} }

.end-title { font-family:'Bebas Neue',sans-serif; font-size:3rem; letter-spacing:0.12em; line-height:1; margin-bottom:8px; }
.end-subtitle { font-size:0.65rem; color:var(--muted); letter-spacing:0.14em; text-transform:uppercase; margin-bottom:28px; line-height:1.6; }
.end-actions { display:flex; gap:10px; justify-content:center; }

.rematch-notif {
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--active-glow);
  border: 1px solid rgba(255,224,102,0.3);
  background: rgba(255,224,102,0.06);
  border-radius: 4px;
  padding: 7px 14px;
  margin-bottom: 12px;
  animation: pulse 1s ease-in-out infinite alternate;
}

/* ── Mobile adjustments ──────────────────────────────────────────────────── */
/* Room info bar standalone (outside panel) */
@media (min-width: 900px) {
  /* On desktop: position it underneath the left panel via grid/flex ordering */
  .game-layout {
    flex-wrap: wrap;
    align-content: center;
  }
  .game-panel-left  { order: 1; }
  .game-center      { order: 2; }
  .game-panel-right { order: 3; }
  .room-info-bar    { order: 4; flex-basis: 200px; width: 200px; margin-top: -200px; /* pull up beside center */ align-self: flex-end; }
}

/* ── Mobile (< 900px) ─────────────────────────────────────────────────────── */
@media (max-width: 899px) {
  body {
    padding: 6px;
    justify-content: flex-start;
    height: 100dvh;
    overflow: hidden;
  }

  #game-screen {
    height: 100dvh;
    overflow: hidden;
    justify-content: space-between; /* spread items to fill height evenly, no dead space */
  }

  .game-layout {
    flex-direction: column;
    gap: 0;
    width: 100%;
    height: 100%;
    justify-content: space-between; /* distribute vertically */
    padding-bottom: 4px;
  }

  /* Top row: both player cards side by side */
  .game-panel-left {
    flex-direction: row;
    justify-content: center;
    gap: 6px;
    width: 100%;
    flex-shrink: 0;
    padding: 4px 0;
  }
  .game-panel-left .panel-title { display: none; }

  .player-card {
    flex: 1;
    max-width: 48%;
    padding: 7px 10px;
    gap: 6px;
  }

  .pc-symbol { font-size: 1.3rem; }
  .pc-name   { font-size: 0.62rem; max-width: 90px; }
  .pc-wins   { font-size: 0.5rem; }

  /* Room code below both player cards, full width */
  .room-info-bar {
    text-align: center;
    font-size: 0.5rem;
    padding: 3px 8px;
    width: 100%;
    flex-shrink: 0;
  }

  /* Force both player cards to always be visible */
  #player-card-x,
  #player-card-o { display: flex !important; }

  /* Status bar compact */
  .status-bar {
    padding: 6px 10px;
    min-width: unset;
    width: 100%;
    flex-shrink: 0;
  }

  .player-indicator { font-size: 0.62rem; }
  .win-banner { font-size: 1.1rem; }

  /* Board center: grow to fill but use only what it needs */
  .game-center {
    gap: 4px;
    width: 100%;
    flex-shrink: 0;
    align-items: center;
  }

  /* Cell size: derived from viewport width, board has 3 inner grids × 3 cells + gaps
     Formula: (100vw - 12px body padding - 14px outer padding - 6 inner-board gaps)
              / (9 cells + 6 inner gaps per row + outer gaps)
     Keep it simple: clamp to fit ~97vw */
  :root { --cell-size: clamp(24px, 8.8vw, 38px); }

  .outer-grid { gap: 4px; padding: 6px; }
  .inner-board { padding: 3px; }
  .cell-grid { gap: 2px; }
  .board-overlay-symbol { font-size: 2.2rem; }

  /* Hint: barely visible, just occupies minimal space */
  .hint {
    font-size: 0.48rem;
    line-height: 1.4;
    color: #555;
    flex-shrink: 0;
    text-align: center;
  }

  /* Right panel: buttons row at the bottom */
  .game-panel-right { order: 99; width: 100%; flex-shrink: 0; }
  .controls-vertical { flex-direction: row; justify-content: center; gap: 8px; flex-wrap: wrap; }
  .controls-vertical button { width: auto; font-size: 0.6rem; padding: 7px 14px; }

  /* Move HTP into the button row on mobile — hide the fixed one */
  .htp-trigger.in-game { display: none; }
  .htp-mobile-btn { display: inline-flex; }
}

/* ── Very small phones (< 380px) ─────────────────────────────────────────── */
@media (max-width: 379px) {
  :root { --cell-size: clamp(22px, 8.2vw, 30px); }
  .lobby-box { padding: 20px 14px; }
  .room-code { font-size: 1.8rem; }
}