/* ═══════════════════════════════════════════════════════════════
   TETRIS BATTLE — Neon Cyberpunk Theme
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg:       #030318;
  --panel:    rgba(255,255,255,0.04);
  --border:   rgba(100,120,255,0.25);
  --cyan:     #00f0f0;
  --purple:   #a040f0;
  --gold:     #f0c000;
  --green:    #00e060;
  --red:      #f03040;
  --text:     #c8d0f8;
  --text-dim: #606888;
  --font:     'Orbitron', monospace;
}

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

html, body {
  width: 100%; height: 100%; overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;           /* prevent double-tap zoom */
  -webkit-touch-callout: none;          /* disable iOS long-press callout menu */
  -webkit-tap-highlight-color: transparent;
}

/* ── animated background grid ── */
body {
  background-image:
    linear-gradient(rgba(0,80,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,80,255,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  animation: gridScroll 30s linear infinite;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(120,0,255,0.12) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

@keyframes gridScroll {
  0%   { background-position: 0 0; }
  100% { background-position: 48px 48px; }
}

/* ── screens ── */
.screen {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  z-index: 10;
  animation: fadeIn 0.3s ease;
}
.screen.hidden { display: none !important; }

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

/* ── site footer (shown on main game page below menu) ── */
.site-footer-main {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 10px 16px;
  font-family: var(--font); font-size: 0.5rem; letter-spacing: 2px;
  color: #606888;
  background: linear-gradient(to top, rgba(3,3,24,0.9), transparent);
  z-index: 11;  /* above .screen (z-index:10) so links are clickable */
  pointer-events: none;  /* only links are interactive */
}
.site-footer-main a {
  color: #606888; text-decoration: none;
  transition: color 0.2s;
  pointer-events: auto;
}
.site-footer-main a:hover { color: var(--cyan); }
.site-footer-main span { opacity: 0.4; }

/* ── hide footer whenever a non-menu screen is active ── */
#screen-lobby.active        ~ .site-footer-main,
#screen-game.active         ~ .site-footer-main,
#screen-gameover.active     ~ .site-footer-main,
#screen-leaderboard.active  ~ .site-footer-main { display: none; }

/* ═══════════════════════════════ MENU ══════════════════════════════════════ */
.menu-container {
  display: flex; flex-direction: column; align-items: center;
  gap: 20px; padding: 32px 48px;
  background: rgba(5,5,30,0.85);
  border: 1px solid var(--border);
  border-radius: 16px;
  backdrop-filter: blur(12px);
  box-shadow: 0 0 60px rgba(80,0,255,0.2), inset 0 1px 0 rgba(255,255,255,0.06);
  min-width: 420px;
}

.game-title {
  font-size: 3.8rem; font-weight: 900; letter-spacing: 8px;
  background: linear-gradient(135deg, var(--cyan) 0%, var(--purple) 50%, var(--gold) 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: titleShift 4s ease infinite;
  line-height: 1;
  text-align: center;
}
.game-subtitle {
  font-size: 1.4rem; font-weight: 700; letter-spacing: 16px;
  color: var(--text-dim); text-align: center; margin-top: -4px;
}
@keyframes titleShift {
  0%,100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

/* name input */
.field-label { font-size: 0.65rem; letter-spacing: 3px; color: var(--text-dim); }
.name-input {
  background: transparent; border: 1px solid var(--border);
  color: var(--cyan); font-family: var(--font); font-size: 1.1rem;
  font-weight: 700; letter-spacing: 4px; text-align: center;
  padding: 10px 20px; border-radius: 8px; outline: none; width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.name-input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 12px rgba(0,240,240,0.3);
}
.name-input::placeholder { color: var(--text-dim); opacity: 0.6; }
.name-input.input-error { border-color: var(--red); box-shadow: 0 0 12px rgba(240,48,64,0.4); }
.name-error {
  font-size: 0.55rem; letter-spacing: 2px; color: var(--red);
  text-align: center; margin-top: 4px;
  animation: fadeIn 0.2s ease;
}

.menu-section-label {
  font-size: 0.6rem; letter-spacing: 4px; color: var(--text-dim);
  align-self: flex-start;
}

.menu-buttons { display: flex; flex-direction: column; gap: 10px; width: 100%; }

.menu-btn {
  position: relative; overflow: hidden;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font); font-size: 0.8rem; font-weight: 700;
  letter-spacing: 3px; padding: 14px 24px;
  border-radius: 8px; cursor: pointer;
  transition: all 0.2s;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.menu-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.06), transparent);
  transform: translateX(-100%);
  transition: transform 0.4s;
}
.menu-btn:hover::before { transform: translateX(100%); }
.menu-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}
.menu-btn:active { transform: translateY(0); }

.btn-solo:hover   { border-color: var(--cyan);   color: var(--cyan);   box-shadow: 0 0 16px rgba(0,240,240,0.25); }
.btn-online:hover { border-color: var(--purple);  color: var(--purple); box-shadow: 0 0 16px rgba(160,64,240,0.25); }
.btn-lb:hover     { border-color: var(--gold);    color: var(--gold);   box-shadow: 0 0 16px rgba(240,192,0,0.25); }

/* CPU difficulty buttons */
.btn-group { display: flex; flex-direction: column; gap: 4px; }
.btn-group-label {
  font-size: 0.6rem; letter-spacing: 3px; color: var(--text-dim);
  padding-left: 4px;
}
.btn-group-inner { display: flex; gap: 8px; }
.btn-cpu { flex: 1; font-size: 0.7rem; padding: 10px 8px; }
.btn-easy:hover   { border-color: var(--green); color: var(--green); }
.btn-mid:hover    { border-color: var(--gold);  color: var(--gold);  }
.btn-hard:hover   { border-color: var(--red);   color: var(--red);   }

/* controls hint */
.controls-hint {
  display: flex; flex-wrap: wrap; gap: 8px 16px;
  justify-content: center;
  font-size: 0.55rem; letter-spacing: 1px; color: var(--text-dim);
  border-top: 1px solid var(--border); padding-top: 16px; width: 100%;
}

/* ═══════════════════════════════ LOBBY ══════════════════════════════════════ */
.lobby-container {
  display: flex; flex-direction: column; align-items: center; gap: 20px;
  background: rgba(5,5,30,0.88);
  border: 1px solid var(--border); border-radius: 16px;
  padding: 36px 48px; backdrop-filter: blur(12px);
  min-width: 560px;
}
.lobby-title {
  font-size: 1.4rem; letter-spacing: 8px;
  color: var(--cyan); text-shadow: 0 0 20px var(--cyan);
}
.lobby-panels { display: flex; align-items: flex-start; gap: 24px; width: 100%; }
.lobby-card {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: 14px;
  padding: 20px; border: 1px solid var(--border); border-radius: 10px;
}
.lobby-card-title { font-size: 0.65rem; letter-spacing: 4px; color: var(--text-dim); }
.lobby-action-btn {
  background: transparent; border: 1px solid var(--cyan); color: var(--cyan);
  font-family: var(--font); font-size: 0.75rem; font-weight: 700;
  letter-spacing: 2px; padding: 10px 24px; border-radius: 6px; cursor: pointer;
  transition: all 0.2s;
}
.lobby-action-btn:hover { background: rgba(0,240,240,0.08); box-shadow: 0 0 14px rgba(0,240,240,0.25); }
.room-code-wrap { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.room-code-label { font-size: 0.55rem; letter-spacing: 3px; color: var(--text-dim); }
.room-code-display {
  font-size: 2.4rem; font-weight: 900; letter-spacing: 10px;
  color: var(--cyan); text-shadow: 0 0 20px var(--cyan);
  min-width: 160px; text-align: center;
}
.copy-btn {
  background: transparent; border: 1px solid var(--border); color: var(--text-dim);
  font-family: var(--font); font-size: 0.6rem; letter-spacing: 2px;
  padding: 6px 14px; border-radius: 4px; cursor: pointer;
  transition: all 0.2s;
}
.copy-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.spinner-wrap { height: 32px; display: flex; align-items: center; justify-content: center; }
.spinner {
  width: 24px; height: 24px; border: 2px solid var(--border);
  border-top-color: var(--cyan); border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.lobby-divider {
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; color: var(--text-dim); letter-spacing: 3px;
  padding: 8px 0; align-self: center;
}
.code-input {
  background: transparent; border: 1px solid var(--border);
  color: var(--cyan); font-family: var(--font); font-size: 1.6rem;
  font-weight: 900; letter-spacing: 8px; text-align: center;
  padding: 10px 16px; border-radius: 8px; outline: none; width: 100%;
  transition: border-color 0.2s;
}
.code-input:focus { border-color: var(--cyan); box-shadow: 0 0 12px rgba(0,240,240,0.25); }
.lobby-status { font-size: 0.7rem; letter-spacing: 2px; color: var(--text-dim); min-height: 20px; }
.back-btn {
  background: transparent; border: none; color: var(--text-dim);
  font-family: var(--font); font-size: 0.7rem; letter-spacing: 2px;
  cursor: pointer; padding: 8px 16px;
  transition: color 0.2s;
}
.back-btn:hover { color: var(--cyan); }

/* ═══════════════════════════════ GAME ═══════════════════════════════════════ */
.game-layout {
  display: flex; align-items: flex-start; justify-content: center;
  gap: 0; padding: 16px;
}

/* Single-player mode: hide opponent side and VS badge */
#screen-game[data-mode="single"] #opponent-side,
#screen-game[data-mode="single"] #game-center { display: none; }

/* Right panel: NEXT + opponent stacked (lives inside .board-row) */
.right-panel {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  flex-shrink: 0;
}

.game-side { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }

/* header row: name label + pause button */
.side-header {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; gap: 8px;
}
.side-label {
  font-size: 0.7rem; font-weight: 700; letter-spacing: 5px;
  color: var(--text-dim);
}
.player-side .side-label { color: var(--cyan); text-shadow: 0 0 10px var(--cyan); }

/* Pause button: fixed top-right on all screens */
.pause-game-btn {
  position: fixed; top: 14px; right: 16px; z-index: 30;
  background: rgba(5,5,30,0.80); backdrop-filter: blur(4px);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: var(--font); font-size: 0.6rem; font-weight: 700;
  letter-spacing: 2px; padding: 8px 14px;
  border-radius: 5px; cursor: pointer;
  transition: all 0.2s; white-space: nowrap;
  display: flex; align-items: center; gap: 12px;
}
/* CSS pause icon via ::before (two bars — no emoji, respects currentColor) */
.pause-game-btn::before {
  content: '';
  display: block;
  flex-shrink: 0;
  width: 3px; height: 11px;
  background: currentColor;
  box-shadow: 5px 0 0 currentColor;
}
.pause-game-btn:hover {
  border-color: var(--cyan); color: var(--cyan);
  box-shadow: 0 0 10px rgba(0,240,240,0.2);
}

/* Board column: name centered above canvas */
.board-col {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.player-name-label {
  font-size: 0.7rem; font-weight: 700; letter-spacing: 5px;
  color: var(--cyan); text-shadow: 0 0 10px var(--cyan);
  text-align: center;
}

/* board-row: stats-left | canvas | stats-right side by side */
.board-row {
  display: flex; flex-direction: row; align-items: flex-start; gap: 10px;
}

.board-wrap {
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 0 30px rgba(0,0,0,0.6), 0 0 1px rgba(100,120,255,0.3);
  overflow: hidden; flex-shrink: 0;
}
canvas { display: block; }

/* Stats panels beside the board */
.side-stats-left {
  display: flex; flex-direction: column; gap: 14px;
  align-items: flex-end; width: 80px; padding-top: 8px;
  align-self: stretch; justify-content: flex-start; /* let tier strip use margin-top:auto */
}
.side-stats-right {
  display: flex; flex-direction: column; gap: 14px;
  align-items: flex-start; width: 110px; padding-top: 8px;
}
.side-stats-sm { width: 90px; }

.stat-block { text-align: right; }
.side-stats-right .stat-block { text-align: left; }
.stat-label {
  font-size: 0.5rem; letter-spacing: 3px; color: var(--text-dim);
  margin-bottom: 4px;
}
.stat-value {
  font-size: 1.15rem; font-weight: 700; color: var(--text);
}
.player-side .stat-value { color: var(--cyan); }

/* VS center badge */
.game-center {
  display: flex; align-items: center; justify-content: center;
  width: 80px; padding-top: 220px;
  flex-shrink: 0;
}
.vs-badge {
  font-size: 1.6rem; font-weight: 900; letter-spacing: 2px;
  color: #fff;
  text-shadow: 0 0 20px var(--purple), 0 0 40px rgba(160,64,240,0.4);
  animation: vsPulse 2.5s ease infinite;
}
@keyframes vsPulse {
  0%,100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.15); opacity: 0.85; }
}

/* ══ Ad banner (top of game screen) ═══════════════════════════════════════ */
#screen-game {
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
}

.ad-banner {
  width: 100%;
  min-height: 60px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid rgba(100,120,255,0.1);
  overflow: hidden;
}

/* ══ Between-game ad break overlay ════════════════════════════════════════ */
.ad-break-box {
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  padding: 28px 32px;
  background: rgba(5,5,30,0.95);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
  min-width: 320px;
}

.ad-break-label {
  font-size: 0.6rem; letter-spacing: 4px; color: var(--text-dim);
}

.ad-break-ins {
  border-radius: 6px; overflow: hidden;
  background: rgba(255,255,255,0.03);
}

.ad-break-timer {
  font-size: 0.65rem; letter-spacing: 2px; color: var(--text-dim);
}

.ad-continue-btn {
  font-family: var(--font); font-size: 0.7rem; font-weight: 700;
  letter-spacing: 3px; color: var(--cyan);
  background: none; border: 1px solid rgba(0,240,240,0.4);
  border-radius: 6px; padding: 10px 32px; cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.ad-continue-btn:hover {
  background: rgba(0,240,240,0.08); border-color: var(--cyan);
}
.ad-continue-btn.hidden { display: none; }

/* ── overlays ── */
.overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(3,3,24,0.82);
  backdrop-filter: blur(6px);
  z-index: 20;
}
.overlay.hidden { display: none; }

.countdown-num {
  font-size: 8rem; font-weight: 900;
  color: var(--cyan);
  text-shadow: 0 0 40px var(--cyan), 0 0 80px rgba(0,240,240,0.4);
  animation: countPop 0.9s ease;
}
@keyframes countPop {
  0%   { transform: scale(0.5); opacity: 0; }
  50%  { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(1); }
}

.pause-box {
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  padding: 40px 60px;
  background: rgba(5,5,30,0.92); border: 1px solid var(--border);
  border-radius: 12px;
}
.pause-title { font-size: 2rem; font-weight: 900; letter-spacing: 8px; color: var(--text); }
.pause-btn {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  font-family: var(--font); font-size: 0.8rem; letter-spacing: 3px;
  padding: 12px 36px; border-radius: 6px; cursor: pointer;
  transition: all 0.2s; width: 200px;
}
.pause-btn:hover { border-color: var(--cyan); color: var(--cyan); box-shadow: 0 0 14px rgba(0,240,240,0.2); }
.pause-btn-quit:hover { border-color: var(--red); color: var(--red); box-shadow: 0 0 14px rgba(240,48,64,0.2); }
.pause-waiting { font-size: 0.75rem; letter-spacing: 3px; color: var(--dim); }

/* Opponent: smaller canvas, no stats panel on desktop */
#canvas-opponent      { width: 120px; height: 240px; }
#canvas-next-opponent { width: 48px;  height: 48px;  }
.side-stats-sm { width: 70px; }
.opponent-side .side-stats-sm { display: none; }

/* ── Controls panel (fixed, right side of game screen) ── */
.controls-panel {
  position: fixed; right: 16px; top: 50%; transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 6px;
  padding: 14px 16px;
  background: rgba(5,5,30,0.80);
  border: 1px solid var(--border);
  border-radius: 10px;
  backdrop-filter: blur(8px);
  font-size: 0.6rem; letter-spacing: 1.5px;
  z-index: 5;
  pointer-events: none;
}
/* Hide SPEED COLOR section — tier shown in left strip instead */
.controls-panel > :nth-child(n+3) { display: none; }
.ctrl-title {
  font-size: 0.55rem; letter-spacing: 3px; color: var(--text-dim);
  border-bottom: 1px solid var(--border); padding-bottom: 4px; margin-bottom: 2px;
}
.ctrl-group { display: flex; flex-direction: column; gap: 4px; }
.ctrl-row { display: flex; align-items: center; gap: 8px; }
.ctrl-key {
  min-width: 52px; text-align: right;
  color: var(--cyan); font-weight: 700; font-size: 0.6rem;
  letter-spacing: 1px;
}
.ctrl-desc { color: var(--text-dim); }
.ctrl-dot {
  display: inline-block; width: 10px; height: 10px;
  border-radius: 2px; flex-shrink: 0;
  margin-left: 42px;
  box-shadow: 0 0 6px currentColor;
}
.ctrl-cursor {
  display: none;
  color: var(--cyan);
  font-size: 0.65rem;
  margin-left: 4px;
  animation: cursorBlink 1s step-end infinite;
}
.ctrl-tier-row.tier-active .ctrl-cursor { display: inline; }
.ctrl-tier-row.tier-active .ctrl-desc   { color: var(--text); font-weight: 700; }
@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ═══════════════════════════════ GAME OVER ══════════════════════════════════ */
.gameover-container {
  display: flex; flex-direction: column; align-items: center; gap: 28px;
  padding: 48px 64px;
  background: rgba(5,5,30,0.92); border: 1px solid var(--border);
  border-radius: 16px; backdrop-filter: blur(12px);
  min-width: 460px;
  animation: goSlideIn 0.5s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes goSlideIn {
  from { transform: translateY(40px) scale(0.9); opacity: 0; }
  to   { transform: translateY(0) scale(1); opacity: 1; }
}

.result-title {
  font-size: 2.2rem; font-weight: 900; letter-spacing: 6px;
  text-align: center; width: 100%;
  animation: titleBounce 0.6s 0.2s both;
}
@keyframes titleBounce {
  from { transform: scale(0.5); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}
.result-win     { color: var(--cyan);   text-shadow: 0 0 30px var(--cyan); }
.result-lose    { color: var(--red);    text-shadow: 0 0 30px var(--red); }
.result-neutral { color: var(--purple); text-shadow: 0 0 30px var(--purple); }

.result-scores {
  display: flex; align-items: center; gap: 20px;
}
.result-vs-wrap { display: flex; align-items: center; gap: 20px; }
.result-vs { font-size: 1.2rem; font-weight: 900; color: var(--text-dim); }

.result-winner-card {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 16px 28px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
}
.res-name  { font-size: 0.65rem; letter-spacing: 4px; color: var(--text-dim); }
.res-score { font-size: 1.8rem; font-weight: 900; color: var(--cyan); }

/* Match score in game screen (below opponent name) */
.match-score-label {
  font-size: 0.55rem; letter-spacing: 3px; color: var(--gold);
  text-shadow: 0 0 8px var(--gold);
  text-align: center; margin-top: 2px;
}

/* Match score in game-over screen */
.result-match-score {
  font-size: 0.7rem; letter-spacing: 3px; color: var(--text-dim);
  margin-bottom: 4px;
}
.result-match-score span {
  color: var(--gold); font-weight: 900;
}

.result-rank-line {
  font-size: 0.7rem; letter-spacing: 3px; color: var(--text-dim);
}
.result-rank {
  font-size: 1.1rem; font-weight: 900; color: var(--gold);
  text-shadow: 0 0 10px var(--gold);
}

.gameover-buttons { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.go-btn {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  font-family: var(--font); font-size: 0.75rem; font-weight: 700; letter-spacing: 2px;
  padding: 12px 24px; border-radius: 8px; cursor: pointer;
  transition: all 0.2s;
}
@media (hover: hover) {
  .go-btn:hover      { border-color: var(--cyan);     color: var(--cyan);     box-shadow: 0 0 14px rgba(0,240,240,0.2); transform: translateY(-2px); }
  .go-btn-lb:hover   { border-color: var(--gold);     color: var(--gold);     box-shadow: 0 0 14px rgba(240,192,0,0.2); }
  .go-btn-menu:hover { border-color: var(--text-dim); color: var(--text-dim); }
}
.go-btn-pulse {
  border-color: var(--cyan); color: var(--cyan);
  animation: btnPulse 1s ease-in-out infinite;
}
@keyframes btnPulse {
  0%, 100% { box-shadow: 0 0 8px rgba(0,240,240,0.3);  opacity: 1; }
  50%       { box-shadow: 0 0 22px rgba(0,240,240,0.8); opacity: 0.75; }
}

/* ═══════════════════════════════ LEADERBOARD ════════════════════════════════ */
.lb-container {
  display: flex; flex-direction: column; align-items: center; gap: 20px;
  padding: 36px 48px;
  background: rgba(5,5,30,0.92); border: 1px solid var(--border);
  border-radius: 16px; backdrop-filter: blur(12px);
  min-width: 680px; max-height: 90vh;
}
.lb-title {
  font-size: 1.5rem; font-weight: 900; letter-spacing: 6px;
  color: var(--gold); text-shadow: 0 0 20px var(--gold);
}
.lb-tabs { display: flex; gap: 8px; }
.lb-tab {
  background: transparent; border: 1px solid var(--border); color: var(--text-dim);
  font-family: var(--font); font-size: 0.65rem; letter-spacing: 3px;
  padding: 8px 20px; border-radius: 20px; cursor: pointer;
  transition: all 0.2s;
}
.lb-tab:hover, .lb-tab.active {
  border-color: var(--gold); color: var(--gold);
  box-shadow: 0 0 12px rgba(240,192,0,0.2);
  background: rgba(240,192,0,0.06);
}

.lb-subtabs {
  display: flex; gap: 6px;
  padding: 6px 0 0 4px;
}
.lb-subtabs.hidden { display: none; }
.lb-subtab {
  background: transparent; border: 1px solid var(--border); color: var(--text-dim);
  font-family: var(--font); font-size: 0.58rem; letter-spacing: 2px;
  padding: 5px 14px; border-radius: 14px; cursor: pointer;
  transition: all 0.2s;
}
.lb-subtab:hover { border-color: var(--cyan); color: var(--cyan); }
.lb-subtab.active {
  border-color: var(--cyan); color: var(--cyan);
  box-shadow: 0 0 8px rgba(0,240,240,0.2);
  background: rgba(0,240,240,0.05);
}

.lb-table-wrap {
  width: 100%; overflow-y: auto; max-height: 55vh;
  border: 1px solid var(--border); border-radius: 8px;
}
.lb-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.72rem;
}
.lb-table thead {
  position: sticky; top: 0;
  background: rgba(3,3,24,0.95);
  border-bottom: 1px solid var(--border);
}
.lb-table th {
  padding: 10px 12px; text-align: left;
  font-size: 0.55rem; letter-spacing: 2px; color: var(--text-dim);
  font-weight: 700;
}
.lb-table td {
  padding: 9px 12px; border-bottom: 1px solid rgba(255,255,255,0.04);
}
.lb-table tbody tr:hover { background: rgba(255,255,255,0.03); }
.lb-table tr.top-rank td { color: var(--gold); }
.lb-table .rank-cell { font-weight: 700; font-size: 0.85rem; }
.lb-table .name-cell { color: var(--text); font-weight: 700; letter-spacing: 1px; }
.lb-table .score-cell { color: var(--cyan); font-weight: 700; font-size: 0.85rem; }
.lb-table .won-cell.won  { color: var(--green); }
.lb-table .won-cell.lost { color: var(--red); }
.lb-table .date-cell { color: var(--text-dim); font-size: 0.6rem; }
.lb-empty {
  text-align: center; padding: 40px; color: var(--text-dim);
  font-size: 0.75rem; letter-spacing: 2px;
}

/* skeleton loader */
.skeleton-bar {
  height: 12px; background: rgba(255,255,255,0.06);
  border-radius: 3px; animation: shimmer 1.5s ease infinite;
  width: 80%;
}
@keyframes shimmer {
  0%,100% { opacity: 0.5; }
  50%      { opacity: 1; }
}

/* ── scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(100,120,255,0.4); }

/* ═══════════════════════════════ TOUCH CONTROLS ════════════════════════════ */
.touch-controls {
  display: none; /* shown via media query below */
  justify-content: space-between;
  align-items: flex-end;
  padding: 8px 16px 12px;
  gap: 12px;
  width: 100%;
  background: rgba(3,3,24,0.7);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.touch-pad {
  display: flex; flex-direction: column; gap: 14px; align-items: center;
  flex: 1;
}
.touch-row { display: flex; gap: 8px; }
.touch-btn {
  display: flex; align-items: center; justify-content: center;
  width: 64px; height: 56px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font); font-size: 1.2rem;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: background 0.1s, border-color 0.1s;
  user-select: none;
}
.touch-btn:active {
  background: rgba(0,240,240,0.15);
  border-color: var(--cyan);
}
.touch-btn-wide {
  width: 136px; height: 48px;
  font-size: 0.7rem; letter-spacing: 2px;
}
.touch-btn-hard {
  background: rgba(160,64,240,0.12);
  border-color: rgba(160,64,240,0.4);
  color: var(--purple);
}
.touch-btn-hard:active {
  background: rgba(160,64,240,0.3);
  border-color: var(--purple);
}

/* ── Tier color strip (left of main canvas, below stats) ── */
.mobile-tier-strip {
  display: flex;
  flex-direction: column-reverse; /* tier 0 at bottom, tier 9 at top */
  align-items: center;
  justify-content: center;
  gap: 3px;
  margin-top: auto;       /* push to bottom of side-stats-left */
  align-self: flex-end;   /* hug the right edge (closest to main canvas) */
  margin-right: 2px;
}
.ts-dot {
  width: 9px; height: 9px;
  border-radius: 2px;
  opacity: 0.18;
  flex-shrink: 0;
  transition: opacity 0.15s, box-shadow 0.15s;
}
.ts-dot.ts-active {
  opacity: 1;
  box-shadow: 0 0 6px currentColor;
}

/* ═══════════════════════════════ RESPONSIVE ════════════════════════════════ */

/* Tablet (≤900px): show touch controls + tier strip, hide desktop panel */
@media (max-width: 900px) {
  .touch-controls    { display: flex; }
  .controls-panel    { display: none; }
  #canvas-player        { width: 210px; height: 420px; }
  #canvas-next-player   { width: 70px;  height: 70px;  }
  #canvas-opponent      { width: 168px; height: 336px; }
  #canvas-next-opponent { width: 56px;  height: 56px;  }
  .side-stats-left  { width: 62px; }
  .side-stats-right { width: 82px; }
  .side-stats-sm    { width: 70px; }
  .game-center      { width: 56px; padding-top: 154px; }
}

/* Phone portrait (≤600px) */
@media (max-width: 600px) {
  html, body { overflow: hidden; }

  /* === Pause button: tighter on mobile === */
  .pause-game-btn { top: 8px; right: 10px; font-size: 0.5rem; padding: 6px 10px; gap: 10px; }

  /* === Screen === */
  #screen-game {
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
  }

  /* === Game layout: row, content vertically centered === */
  .game-layout {
    flex-direction: row;
    align-items: center;   /* vertically center between header and touch controls */
    justify-content: center;
    padding: 4px 6px;
    gap: 4px;
    flex: 1;
    min-height: 0;
    overflow: hidden;
  }

  /* Hide VS badge on mobile */
  .game-center { display: none !important; }

  /* === Player side === */
  .player-side { flex-shrink: 0; align-items: flex-start; }
  .player-side .board-row { gap: 4px; }

  /* === Stats === */
  .side-stats-left { width: 48px; gap: 8px; padding-top: 4px; align-items: flex-end; align-self: stretch; justify-content: flex-start; }
  .stat-label { font-size: 0.42rem; letter-spacing: 2px; }
  .stat-value { font-size: 0.85rem; }
  .side-label { font-size: 0.55rem; letter-spacing: 3px; }

  /* Tier strip: smaller dots on mobile */
  .mobile-tier-strip { margin-right: 1px; }
  .ts-dot { width: 6px; height: 6px; border-radius: 1px; }

  /* Player name: smaller font on mobile */
  .player-name-label { font-size: 0.5rem; letter-spacing: 3px; }

  /* === Single player canvas === */
  #screen-game[data-mode="single"] #canvas-player { width: 165px; height: 330px; }

  /* === VS mode canvas === */
  #screen-game:not([data-mode="single"]) #canvas-player { width: 150px; height: 300px; }

  /* === Right panel: flex-column, narrow === */
  .right-panel {
    flex-direction: column;
    align-items: center;
    gap: 4px;
    width: 64px;
    flex-shrink: 0;
  }
  .right-panel .side-stats-right {
    width: auto; padding-top: 0; gap: 4px; align-items: center;
  }
  #canvas-next-player { width: 48px; height: 48px; }

  /* === Opponent: show canvas + compact name, hide stats === */
  .right-panel .opponent-side .side-stats-sm { display: none; }
  .right-panel .opponent-side { padding: 0; width: 100%; }
  .right-panel .opponent-side .board-row { gap: 0; justify-content: center; }
  .right-panel .opponent-side .side-header {
    justify-content: center;
    padding: 0 0 2px 0;
  }
  .right-panel .opponent-side .side-label {
    font-size: 0.4rem;
    letter-spacing: 1px;
    text-align: center;
    max-width: 64px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-dim);
  }
  #canvas-opponent { width: 56px; height: 112px; }

  /* === Touch controls === */
  .touch-controls { padding: 8px 12px 16px; }
  .touch-btn      { width: 56px; height: 52px; font-size: 1.1rem; }
  .touch-btn-wide { width: 120px; height: 44px; font-size: 0.62rem; }

  /* === Lobby: stack panels vertically === */
  .lobby-container { min-width: unset; width: 95vw; padding: 24px 16px; gap: 14px; }
  .lobby-panels    { flex-direction: column; align-items: stretch; gap: 12px; }
  .lobby-divider   { padding: 2px 0; }

  /* === Menu === */
  .menu-container { padding: 20px 24px; min-width: unset; width: 90vw; gap: 14px; }
  .game-title     { font-size: 2.6rem; }
}

/* iPhone safe area (notch / home bar) */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .touch-controls {
    padding-bottom: calc(12px + env(safe-area-inset-bottom));
  }
}

/* Very small phones (≤375px) */
@media (max-width: 375px) {
  #screen-game[data-mode="single"] #canvas-player { width: 148px; height: 296px; }
  #screen-game:not([data-mode="single"]) #canvas-player { width: 135px; height: 270px; }
  #canvas-next-player { width: 42px; height: 42px; }
  #canvas-opponent    { width: 50px; height: 100px; }
  .right-panel { width: 56px; }
  .touch-btn      { width: 50px; height: 48px; font-size: 1rem; }
  .touch-btn-wide { width: 108px; }
}

/* ── Leaderboard responsive (≤720px) ── */
@media (max-width: 720px) {
  .lb-container {
    min-width: unset;
    width: 100vw;
    max-height: 100vh;
    border-radius: 0;
    border-left: none; border-right: none;
    padding: 20px 12px 12px;
    gap: 12px;
  }
  .lb-title { font-size: 1.1rem; letter-spacing: 4px; }
  .lb-tabs  { flex-wrap: wrap; gap: 4px; }
  .lb-tab   { padding: 6px 12px; font-size: 0.58rem; letter-spacing: 2px; }
  .lb-subtab { padding: 4px 10px; font-size: 0.52rem; }
  .lb-table-wrap { overflow-x: auto; max-height: 52vh; }
  .lb-table { min-width: 360px; font-size: 0.62rem; }
  .lb-table th { padding: 8px 6px; font-size: 0.48rem; letter-spacing: 1px; }
  .lb-table td { padding: 7px 6px; }
  #screen-leaderboard { align-items: flex-start; }
}