/* BoredBusters v3.1 - Premium Smooth & Flicker-Free */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
    --bg: #0c0707;
    --bg-card: #1a1212;
    --bg-card-hover: #281a1a;
    --bg-hover: #321e1e;
    --border: #3a2323;
    --border-light: #4a2e2e;
    --primary: #E74C3C;
    --primary-light: #ff6b5a;
    --primary-glow: rgba(231,76,60,0.5);
    --secondary: #FEE75C;
    --secondary-glow: rgba(254,231,92,0.4);
    --accent: #ff3b30;
    --accent-glow: rgba(255,59,48,0.4);
    --text: #f8fafc;
    --text-dim: #8b8fa8;
    --text-faint: #5a5e78;
    --success: #10b981;
    --warning: #f59e0b;
    --ease-spring: cubic-bezier(0.16,1,0.3,1);
    --ease-smooth: cubic-bezier(0.4,0,0.2,1);
    --ease-bounce: cubic-bezier(0.34,1.56,0.64,1);
    --nav-h: 64px;
    --radius: 20px;
    --radius-sm: 12px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
}

/* Reset - Flicker Free */
* { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color: transparent; }
*::before, *::after { box-sizing:border-box; }
html { 
    scroll-behavior: smooth; 
    scrollbar-width: thin; 
    scrollbar-color: var(--border) var(--bg);
    -webkit-text-size-adjust: 100%;
}
::-webkit-scrollbar { width:8px; height:8px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius:100px; }
::-webkit-scrollbar-track { background: transparent; }

html {
    background-color: var(--bg);
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overscroll-behavior-y: none;
    position: relative;
    line-height: 1.6;
    /* FIX FLICKER: isolate stacking context, no filter on body */
    isolation: isolate;
}

body.has-interactive-background {
    background-color: transparent;
}

body.has-interactive-background::before,
body.has-interactive-background::after {
    display: none;
}

.swift7-interactive-background {
    position: fixed;
    inset: 0;
    z-index: -1;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    user-select: none;
    opacity: 0.94;
}

.background-motion-toggle {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--text);
    min-width: 44px;
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0;
    flex-shrink: 0;
    transition: transform 0.2s var(--ease-smooth), border-color 0.2s, opacity 0.2s;
    backdrop-filter: blur(12px);
}
.background-motion-toggle:hover {
    border-color: rgba(254, 231, 92, 0.35);
    transform: scale(1.05) rotate(8deg);
}
.background-motion-toggle.is-paused { opacity: 0.58; }
.background-motion-toggle:not(.is-paused) {
    animation: backgroundSpark 9s ease-in-out infinite;
}
@keyframes backgroundSpark {
    0%, 100% { box-shadow: 0 0 0 rgba(254, 231, 92, 0); }
    50% { box-shadow: 0 0 16px rgba(254, 231, 92, 0.2); }
}
@media (prefers-reduced-motion: reduce) {
    .background-motion-toggle { animation: none !important; }
}

/* Premium Background - STATIC to prevent flicker (no scale/rotate animation on fixed) */
body::before {
    content:'';
    position: fixed;
    inset:0;
    background: 
        radial-gradient(ellipse 800px 600px at 15% 20%, rgba(231,76,60,0.16) 0%, transparent 60%),
        radial-gradient(ellipse 600px 800px at 85% 30%, rgba(254,231,92,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 700px 500px at 50% 85%, rgba(255,59,48,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 500px 500px at 80% 80%, rgba(192,57,43,0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: -2;
    /* FIX: no will-change, no transform animation, static = no flicker */
}
body::after {
    content:'';
    position: fixed;
    inset:0;
    background-image: radial-gradient(rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    z-index: -1;
    opacity:0.4;
}

/* Navbar - Glass but FLICKER-FREE */
.navbar {
    display:flex;
    justify-content: flex-start;
    align-items:center;
    gap: 12px;
    padding: 0 20px;
    height: var(--nav-h);
    background: rgba(18,18,26,0.85);
    backdrop-filter: blur(16px) saturate(1.2);
    -webkit-backdrop-filter: blur(16px) saturate(1.2);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    position: sticky;
    top:0;
    z-index: 100;
    /* FIX FLICKER: create own layer, isolation, translate3d, NO will-change backdrop-filter */
    transform: translate3d(0,0,0);
    isolation: isolate;
    backface-visibility: hidden;
    transition: background 0.3s var(--ease-smooth), box-shadow 0.3s var(--ease-smooth), border-color 0.3s;
}
.navbar.scrolled {
    background: rgba(18,18,26,0.95);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3), 0 0 0 1px rgba(255,255,255,0.04);
    border-bottom-color: rgba(255,255,255,0.08);
}

.logo {
    font-weight: 900;
    font-size: clamp(19px, 4vw, 26px);
    display:flex;
    align-items:center;
    gap:12px;
    letter-spacing: -0.8px;
    flex-shrink:0;
    position:relative;
    transition: transform 0.2s var(--ease-spring);
}
.logo:active { transform: scale(0.97); }
.logo img { 
    width:36px; height:36px; 
    border-radius:10px; 
    object-fit:cover; 
    box-shadow: 0 0 20px rgba(231,76,60,0.3), 0 4px 12px rgba(0,0,0,0.3);
    transition: transform 0.3s var(--ease-spring), box-shadow 0.3s;
    /* FIX: no will-change permanent */
}
.logo:hover img { transform: rotate(-3deg) scale(1.03); box-shadow: 0 0 28px rgba(231,76,60,0.4); }
.logo span { 
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip:text;
}
.logo .dot {
    width:8px; height:8px;
    background: var(--secondary);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--secondary-glow);
    animation: dotPulse 6s ease-in-out infinite;
}
@keyframes dotPulse {
    0%,100% { transform: scale(1); opacity:1; }
    50% { transform: scale(1.15); opacity:0.9; }
}

.nav-links { display:flex; gap:18px; align-items:center; margin-left:auto; min-width:0; flex-wrap:nowrap; }
.nav-controls { display:flex; align-items:center; gap:8px; flex-shrink:0; margin-left:0; }
.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.25s var(--ease-smooth), transform 0.25s var(--ease-spring);
    font-size: 14px;
    position:relative;
    padding:8px 0;
}
.nav-links a::after {
    content:'';
    position:absolute;
    bottom:0; left:50%; width:0; height:2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.35s var(--ease-spring);
    border-radius:2px;
    transform: translateX(-50%);
}
.nav-links a:hover { color: var(--text); transform: translateY(-1px); }
.nav-links a:hover::after, .nav-links a.active::after { width:100%; }
.nav-links a.active { color: var(--text); font-weight:600; }

/* Mobile Toggle */
.mobile-toggle {
    display:none;
    margin-left: 8px;
    width:44px; height:44px;
    background: rgba(255,255,255,0.06);
    border:1px solid rgba(255,255,255,0.08);
    border-radius:12px;
    align-items:center;
    justify-content:center;
    cursor:pointer;
    color:var(--text);
    font-size:20px;
    transition: all 0.2s var(--ease-spring);
    backdrop-filter: blur(12px);
}
.mobile-toggle:hover { background: rgba(255,255,255,0.1); transform: scale(1.03); }
.mobile-toggle:active { transform: scale(0.93); }

/* Mobile Drawer - No flicker */
.mobile-drawer {
    position: fixed;
    inset:0;
    z-index: 200;
    pointer-events:none;
    visibility:hidden;
    transition: visibility 0.4s;
}
.mobile-drawer.open { pointer-events:auto; visibility:visible; }
.drawer-backdrop {
    position:absolute; inset:0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity:0;
    transition: opacity 0.35s var(--ease-smooth);
}
.mobile-drawer.open .drawer-backdrop { opacity:1; }
.drawer-panel {
    position:absolute;
    top:0; right:0; bottom:0;
    width:min(340px, 88vw);
    background: var(--bg-card);
    border-left:1px solid rgba(255,255,255,0.06);
    padding:28px 20px;
    transform: translate3d(100%,0,0);
    transition: transform 0.45s var(--ease-spring);
    display:flex;
    flex-direction:column;
    gap:20px;
    overflow-y:auto;
    box-shadow: -20px 0 60px rgba(0,0,0,0.5);
}
.mobile-drawer.open .drawer-panel { transform: translate3d(0,0,0); }
.drawer-panel a {
    padding:14px 16px;
    background: rgba(255,255,255,0.03);
    border:1px solid rgba(255,255,255,0.06);
    border-radius:12px;
    color:var(--text);
    text-decoration:none;
    font-weight:600;
    display:flex;
    align-items:center;
    gap:10px;
    transition: all 0.25s var(--ease-spring);
}
.drawer-panel a:hover { transform: translateX(3px); background: rgba(255,255,255,0.06); border-color: rgba(231,76,60,0.2); }

/* Buttons - Flicker Free */
.btn {
    padding: 12px 22px;
    border-radius: 14px;
    border:none;
    font-weight: 600;
    font-family: 'Outfit';
    cursor:pointer;
    transition: transform 0.2s var(--ease-spring), box-shadow 0.25s var(--ease-smooth), background 0.25s, filter 0.25s;
    text-decoration: none;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    font-size: 14px;
    min-height:46px;
    user-select:none;
    touch-action: manipulation;
    position:relative;
    overflow:hidden;
    letter-spacing: -0.1px;
    /* FIX: no will-change, no translateZ permanent */
}
.btn:active { transform: scale(0.96); }
.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #c0392b 100%);
    color:white;
    box-shadow: 0 4px 16px rgba(231,76,60,0.28), 0 1px 0 rgba(255,255,255,0.1) inset;
    border:1px solid rgba(255,255,255,0.08);
}
.btn-primary:hover { 
    transform: translateY(-1px) scale(1.01);
    box-shadow: 0 8px 24px rgba(231,76,60,0.35), 0 0 0 1px rgba(231,76,60,0.2);
    filter: brightness(1.08);
}
.btn-ghost {
    background: rgba(255,255,255,0.04);
    border:1px solid rgba(255,255,255,0.08);
    color:var(--text);
}
.btn-ghost:hover { background: rgba(255,255,255,0.07); border-color: rgba(231,76,60,0.25); transform: translateY(-1px); }
.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), #f5c518);
    color:#000;
    font-weight:700;
    box-shadow: 0 4px 16px var(--secondary-glow);
}
.btn-secondary:hover { transform: translateY(-1px) scale(1.01); box-shadow: 0 8px 24px var(--secondary-glow); filter: brightness(1.05); }
.btn-small { padding:9px 16px; font-size:13px; border-radius:11px; min-height:38px; }

/* Hero */
.hero {
    text-align:center;
    padding: clamp(40px, 10vw, 80px) 20px clamp(32px, 6vw, 48px);
    max-width: 900px;
    margin: 0 auto;
    position:relative;
    /* FIX: isolation to prevent glow flicker */
    isolation: isolate;
}
.hero h1 {
    font-size: clamp(32px, 9vw, 64px);
    font-weight: 900;
    line-height: 0.9;
    letter-spacing: -2px;
    margin-bottom: 16px;
    animation: fadeUp 0.6s var(--ease-spring) both;
}
.hero h1 .grad {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 40%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip:text;
    /* FIX: remove blur ::after that caused flicker */
}
.hero p {
    color: var(--text-dim);
    font-size: clamp(15px, 3.8vw, 19px);
    max-width:640px;
    margin:0 auto 28px;
    line-height:1.6;
    animation: fadeUp 0.6s var(--ease-spring) 0.08s both;
}
.hero .btn { animation: fadeUp 0.6s var(--ease-spring) 0.16s both; }

.stats-bar {
    display:flex;
    justify-content:center;
    gap:clamp(20px, 5vw, 40px);
    margin: 32px 0;
    flex-wrap:wrap;
    animation: fadeUp 0.6s var(--ease-spring) 0.24s both;
}
.stat { 
    text-align:center; 
    min-width:70px; 
    padding:12px 16px;
    background: rgba(255,255,255,0.02);
    border:1px solid rgba(255,255,255,0.04);
    border-radius:14px;
    transition: transform 0.25s var(--ease-spring), background 0.25s, border-color 0.25s;
}
.stat:hover { transform: translateY(-2px); background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.08); }
.stat b { display:block; font-size:clamp(22px, 5.5vw, 30px); font-weight:800; color:var(--secondary); font-family:'JetBrains Mono'; letter-spacing:-1px; }
.stat span { font-size:10px; text-transform:uppercase; letter-spacing:1.2px; color:var(--text-dim); font-weight:600; }

@keyframes fadeUp { 
    from { opacity:0; transform: translateY(16px); } 
    to { opacity:1; transform: translateY(0); } 
}

/* Game Grid - FIX FLICKER: removed content-visibility auto which caused Chrome flicker */
.games-grid {
    display:grid;
    grid-template-columns: 1fr;
    gap:18px;
    padding: 20px 16px 80px;
    max-width: 1440px;
    margin:0 auto;
}
@media (min-width: 600px) { .games-grid { grid-template-columns: repeat(2, 1fr); padding: 24px 20px 80px; gap:20px; } }
@media (min-width: 1024px) { .games-grid { grid-template-columns: repeat(3, 1fr); padding: 24px 32px 80px; gap:22px; } }
@media (min-width: 1440px) { .games-grid { grid-template-columns: repeat(4, 1fr); gap:24px; } }

/* Game Card - FLICKER FREE VERSION */
.game-card {
    background: linear-gradient(180deg, var(--bg-card) 0%, #0e0e16 100%);
    border:1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    overflow:hidden;
    transition: transform 0.35s var(--ease-spring), box-shadow 0.35s var(--ease-smooth), border-color 0.35s;
    position:relative;
    /* FIX FLICKER: NO content-visibility, NO contain: paint, NO will-change permanent, NO backdrop-filter on card */
    /* Use isolation + translate3d for stable layer */
    isolation: isolate;
    transform: translate3d(0,0,0);
    backface-visibility: hidden;
}
.game-card::before {
    /* FIX: removed mouse-tracking radial gradient that caused repaint flicker */
    /* Now static subtle gradient on hover only */
    content:'';
    position:absolute;
    inset:0;
    background: linear-gradient(135deg, rgba(231,76,60,0.04), transparent 60%);
    opacity:0;
    transition: opacity 0.35s;
    pointer-events:none;
    z-index:1;
}
.game-card:hover::before { opacity:1; }
@media (hover: hover) {
    .game-card:hover {
        /* FIX: no scale 1.02 which can flicker with border-radius, use translate only + subtle scale */
        transform: translate3d(0,-6px,0);
        border-color: rgba(231,76,60,0.25);
        box-shadow: 
            0 16px 32px rgba(0,0,0,0.4), 
            0 0 0 1px rgba(231,76,60,0.08);
    }
}
.game-card:active { transform: translate3d(0,-2px,0) scale(0.98); transition-duration: 0.12s; }

.game-thumb {
    height:180px;
    position:relative;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:56px;
    overflow:hidden;
    background: radial-gradient(ellipse at center, rgba(231,76,60,0.06) 0%, transparent 70%);
    transition: transform 0.4s var(--ease-spring);
    /* FIX: no will-change */
}
@media (min-width:768px) { .game-thumb { height:200px; font-size:64px; } }
.game-thumb .bg-icon {
    position:absolute;
    font-size:160px;
    opacity:0.025;
    transform: rotate(-10deg);
    transition: transform 0.4s var(--ease-spring), opacity 0.4s;
}
@media (hover:hover) {
    .game-card:hover .game-thumb { transform: scale(1.02); }
    .game-card:hover .game-thumb .bg-icon { transform: rotate(-6deg) scale(1.05); opacity:0.04; }
}

.badge {
    position:absolute;
    top:12px; left:12px;
    padding:5px 10px;
    border-radius:100px;
    font-size:10px;
    font-weight:800;
    text-transform:uppercase;
    letter-spacing:0.6px;
    z-index:2;
    border:1px solid rgba(255,255,255,0.1);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    /* FIX: no float animation that caused flicker, use static */
}
.badge-live { background: var(--success); color:white; }
.badge-hot { background: var(--accent); color:white; }
.badge-new { background: var(--primary); color:white; }

.players {
    position:absolute;
    top:12px; right:12px;
    background: rgba(0,0,0,0.75);
    padding:5px 10px;
    border-radius:100px;
    font-size:11px;
    display:flex; align-items:center; gap:6px;
    font-family:'JetBrains Mono';
    font-weight:600;
    z-index:2;
    border:1px solid rgba(255,255,255,0.08);
}
.players .dot { width:6px; height:6px; background:var(--success); border-radius:50%; animation:pulse 6s ease-in-out infinite; }

.game-info { padding:18px 18px 16px; position:relative; z-index:1; }
@media (min-width:768px) { .game-info { padding:20px 18px 16px; } }
.game-info h3 { font-size:clamp(16px, 3.5vw, 19px); font-weight:800; margin-bottom:6px; display:flex; align-items:center; gap:8px; flex-wrap:wrap; line-height:1.2; letter-spacing:-0.2px; }
.game-info p { color:var(--text-dim); font-size:13px; line-height:1.5; margin-bottom:12px; min-height:36px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.game-meta { display:flex; gap:6px; margin-bottom:12px; flex-wrap:wrap; }
.meta-tag {
    padding:3px 8px;
    background: rgba(255,255,255,0.04);
    border:1px solid rgba(255,255,255,0.06);
    border-radius:7px;
    font-size:10px;
    color:var(--text-dim);
    font-family:'JetBrains Mono';
    font-weight:500;
}
.game-actions { display:flex; gap:10px; }
.game-actions .btn { flex:1; font-weight:700; }

/* Lobby & Game Room - No flicker glass */
.lobby-container { max-width:1200px; margin:0 auto; padding:20px 16px; }
@media (min-width:768px) { .lobby-container { padding:28px 32px; } }

.room-list { display:grid; gap:12px; }
.room-card {
    background: var(--bg-card);
    border:1px solid rgba(255,255,255,0.06);
    border-radius:14px;
    padding:16px 18px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    transition: transform 0.25s var(--ease-spring), border-color 0.25s, background 0.25s, box-shadow 0.25s;
    gap:12px;
    position:relative;
}
.room-card:hover { border-color:rgba(231,76,60,0.25); background: var(--bg-card-hover); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,0,0,0.2); }
.room-id { font-family:'JetBrains Mono'; font-weight:700; font-size:14px; color: var(--primary-light); }

.game-board-wrap {
    display:flex;
    gap:18px;
    max-width:1240px;
    margin:0 auto;
    padding:16px;
    flex-direction:column;
}
@media (min-width: 900px) {
    .game-board-wrap { flex-direction:row; padding:24px 32px; gap:24px; }
}
.game-area {
    flex:1;
    min-width:0;
    background: var(--bg-card);
    border:1px solid rgba(255,255,255,0.06);
    border-radius:var(--radius);
    padding:20px;
    position:relative;
    overflow:hidden;
    /* FIX: no backdrop-filter + no translateZ that caused flicker on canvas parent */
}
@media (min-width:768px) { .game-area { padding:24px; } }
.side-panel {
    width:100%;
    display:flex;
    flex-direction:column;
    gap:14px;
}
@media (min-width:900px) { .side-panel { width:320px; flex-shrink:0; } }
.panel {
    background: var(--bg-card);
    border:1px solid rgba(255,255,255,0.06);
    border-radius:14px;
    padding:16px;
    transition: border-color 0.25s, transform 0.25s;
}
.panel:hover { border-color: rgba(255,255,255,0.08); }
.panel h4 { font-size:11px; margin-bottom:12px; color:var(--text-dim); text-transform:uppercase; letter-spacing:1px; font-weight:700; }

/* Game Boards - Flicker free */
.ttt-grid {
    display:grid;
    grid-template-columns: repeat(3, 1fr);
    gap:10px;
    max-width: min(420px, 92vw);
    margin:0 auto;
    aspect-ratio:1;
}
.ttt-cell {
    background: var(--bg);
    border:2px solid rgba(255,255,255,0.06);
    border-radius:14px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:clamp(32px, 11vw, 52px);
    font-weight:900;
    cursor:pointer;
    transition: transform 0.18s var(--ease-spring), border-color 0.2s, background 0.2s;
    aspect-ratio:1;
    touch-action: manipulation;
    user-select:none;
    position:relative;
}
.ttt-cell:active { transform: scale(0.92); }
@media (hover:hover) { 
    .ttt-cell:hover { 
        border-color: rgba(231,76,60,0.35); 
        background: var(--bg-hover);
        transform: scale(1.02);
    } 
}
.ttt-cell.x { color: var(--secondary); text-shadow: 0 0 12px var(--secondary-glow); }
.ttt-cell.o { color: var(--primary-light); text-shadow: 0 0 12px var(--primary-glow); }
.ttt-cell.win { 
    background: rgba(231,76,60,0.2) !important; 
    border-color: var(--secondary) !important; 
    animation: winPulse 2.4s ease-in-out infinite alternate;
    box-shadow: 0 0 20px var(--secondary-glow);
}

.c4-board {
    display:grid;
    grid-template-columns: repeat(7, 1fr);
    gap:6px;
    background: #1e3a8a;
    padding:12px;
    border-radius:16px;
    max-width: min(520px, 95vw);
    margin:0 auto;
    box-shadow: var(--shadow), 0 0 0 1px rgba(255,255,255,0.05) inset;
    border:1px solid rgba(255,255,255,0.08);
}
.c4-cell {
    aspect-ratio:1;
    background: radial-gradient(circle at 30% 30%, #0a0a0f, #000);
    border-radius:50%;
    cursor:pointer;
    transition: transform 0.18s var(--ease-spring);
    display:flex; align-items:center; justify-content:center;
    touch-action: manipulation;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.5);
}
.c4-cell:hover { transform: scale(1.06); }
.c4-cell:active { transform: scale(0.9); }
.c4-cell.p1 { background: radial-gradient(circle at 30% 30%, #06ffa5, #059669); box-shadow: 0 0 12px rgba(6,255,165,0.4), inset 0 -2px 0 rgba(0,0,0,0.3); animation: c4Drop 0.35s var(--ease-bounce); }
.c4-cell.p2 { background: radial-gradient(circle at 30% 30%, #ff006e, #be185d); box-shadow: 0 0 12px var(--accent-glow), inset 0 -2px 0 rgba(0,0,0,0.3); animation: c4Drop 0.35s var(--ease-bounce); }
@keyframes c4Drop { 0% { transform: translateY(-100%) scale(0.8); } 100% { transform: translateY(0) scale(1); } }

.rps-choices { display:flex; gap:12px; justify-content:center; margin:20px 0; flex-wrap:wrap; }
.rps-btn {
    width: clamp(80px, 24vw, 110px); height: clamp(80px, 24vw, 110px);
    border-radius:16px;
    border:2px solid rgba(255,255,255,0.06);
    background: var(--bg-card);
    font-size:clamp(32px, 9vw, 44px);
    cursor:pointer;
    transition: all 0.25s var(--ease-spring);
    touch-action: manipulation;
}
.rps-btn:active { transform: scale(0.9); }
@media (hover:hover) { 
    .rps-btn:hover { 
        border-color: rgba(231,76,60,0.35); 
        transform: translateY(-2px) scale(1.03);
        background: var(--bg-hover);
    } 
}
.rps-btn.selected { 
    border-color: var(--secondary); 
    background: rgba(6,255,165,0.12);
    box-shadow: 0 0 20px var(--secondary-glow);
    transform: scale(1.05);
}

/* Canvas - FIX FLICKER: no hover box-shadow change, no transform */
canvas {
    max-width:100% !important;
    height:auto !important;
    touch-action: none;
    display:block;
    margin:0 auto;
    border-radius:14px !important;
    border:1px solid rgba(255,255,255,0.06);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    background: #0a0a0f;
    /* FIX: no will-change, no translateZ, no hover effect that causes flicker */
}
canvas.swift7-interactive-background,
#swift7-interactive-background {
    position: fixed !important;
    inset: 0 !important;
    z-index: -1 !important;
    width: 100vw !important;
    height: 100vh !important;
    max-width: none !important;
    max-height: none !important;
    margin: 0 !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    background: transparent !important;
    pointer-events: none !important;
    display: block !important;
}
#blobCanvas, #bombCanvas, #conquestCanvas, #bomberCanvas, #drawCanvas {
    width:100% !important;
    max-width:800px;
    aspect-ratio: 4/3;
}

/* Chat - No backdrop-filter flicker */
.chat-box {
    height:180px;
    overflow-y:auto;
    display:flex;
    flex-direction:column;
    gap:8px;
    margin-bottom:12px;
    padding:12px;
    background: rgba(0,0,0,0.2);
    border:1px solid rgba(255,255,255,0.04);
    border-radius:10px;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}
@media (min-width:768px) { .chat-box { height:220px; } }
.chat-msg { 
    font-size:13px; 
    word-break:break-word; 
    padding:6px 10px;
    background: rgba(255,255,255,0.02);
    border-radius:8px;
    animation: chatIn 0.25s var(--ease-spring);
}
@keyframes chatIn { from { opacity:0; transform: translateY(6px); } to { opacity:1; transform: translateY(0); } }
.chat-msg b { color: var(--primary-light); font-weight:700; }
.chat-input { display:flex; gap:10px; }
.chat-input input {
    flex:1;
    background: rgba(0,0,0,0.3);
    border:1px solid rgba(255,255,255,0.06);
    border-radius:10px;
    padding:12px 14px;
    color:white;
    font-family:'Outfit';
    font-size:16px;
    min-height:46px;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.chat-input input:focus { outline:none; border-color:rgba(231,76,60,0.4); box-shadow: 0 0 0 3px rgba(231,76,60,0.1); }
.chat-input input::placeholder { color: var(--text-faint); }

/* Auth Modal */
#authModal {
    padding:16px !important;
    background: rgba(0,0,0,0.8) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}
#authModal > div {
    max-height: 92dvh;
    overflow-y:auto;
    -webkit-overflow-scrolling: touch;
    border-radius:20px !important;
    padding:24px !important;
    background: var(--bg-card) !important;
    border:1px solid rgba(255,255,255,0.08) !important;
    box-shadow: var(--shadow-lg) !important;
    animation: modalIn 0.4s var(--ease-spring);
}
@keyframes modalIn {
    from { opacity:0; transform: scale(0.96) translateY(12px); }
    to { opacity:1; transform: scale(1) translateY(0); }
}
@media (min-width:480px) {
    #authModal > div { padding:28px !important; border-radius:22px !important; }
}

/* Inputs */
input, textarea, select { font-size:16px; }
@media (min-width:768px) { input, textarea, select { font-size:14px; } }

/* Game Status */
#gameStatus {
    position:fixed;
    bottom:24px; left:50%;
    transform: translateX(-50%) translateY(12px);
    background: rgba(18,18,26,0.95);
    border:1px solid rgba(255,255,255,0.08);
    border-radius:12px;
    padding:12px 20px;
    z-index:9999;
    max-width:90%;
    text-align:center;
    box-shadow: var(--shadow-lg);
    font-weight:600;
    font-size:14px;
    opacity:0;
    transition: all 0.35s var(--ease-spring);
    pointer-events:none;
}
#gameStatus[style*="block"] {
    opacity:1 !important;
    transform: translateX(-50%) translateY(0) !important;
}

/* Mobile Controls */
.mobile-controls {
    background: linear-gradient(to top, rgba(7,7,11,0.96) 0%, rgba(7,7,11,0.85) 50%, transparent 100%) !important;
    border-top:1px solid rgba(255,255,255,0.04);
}
.dpad-btn, .joystick-base, .bomb-btn {
    box-shadow: 0 4px 16px rgba(0,0,0,0.3), 0 0 0 1px rgba(255,255,255,0.06) inset !important;
    transition: transform 0.12s var(--ease-spring), background 0.2s !important;
}
.dpad-btn:active, .joystick-base:active, .bomb-btn:active {
    transform: scale(0.9) !important;
}

/* Round Badge */
.round-badge, #roundDisplay {
    background: rgba(231,76,60,0.12) !important;
    border:1px solid rgba(231,76,60,0.2) !important;
    font-family:'JetBrains Mono' !important;
}
.score-item, #scoreBar > div {
    background: rgba(255,255,255,0.04) !important;
    border:1px solid rgba(255,255,255,0.06) !important;
}

/* Animations - Reduced motion safe.
   Do NOT use 0.01ms duration: infinite pulses then strobe at light speed on Windows PCs. */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.55; } }
@keyframes winPulse { 0% { transform:scale(1); } 100% { transform:scale(1.025); } }

/* Focus */
.btn:focus-visible, a:focus-visible, input:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Safe Area */
@supports (padding: max(0px)) {
    .navbar { padding-left: max(20px, env(safe-area-inset-left)); padding-right: max(20px, env(safe-area-inset-right)); }
    .lobby-container, .games-grid, .hero { padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
    body { padding-bottom: env(safe-area-inset-bottom); }
    .mobile-controls { padding-bottom: max(16px, env(safe-area-inset-bottom)) !important; }
}

/* Mobile - Smooth */
@media (max-width: 1024px) {
    .nav-links { display:none; }
    .mobile-toggle { display:flex; }
}
@media (max-width: 768px) {
    :root { --nav-h: 58px; }
    .navbar { padding:0 16px; height:var(--nav-h); }
    .lobby-container { padding-bottom: 100px; }
    .game-board-wrap { padding-bottom: 100px; }
    .btn { min-height:50px; font-size:15px; border-radius:14px; }
    .btn-small { min-height:42px; }
    #lobbyView > div:first-of-type { flex-direction:column; }
    #lobbyView .btn { width:100%; justify-content:center; }
    .room-card { flex-direction:column; align-items:stretch; }
    .room-card .btn { width:100%; }
    .game-card { border-radius:18px; }
    .game-thumb { height:160px; }
    .hero { padding: 32px 16px 28px; }
    .stats-bar { gap:12px; }
    .stat { min-width:60px; padding:10px 14px; }
}

@media (max-width: 480px) {
    .hero { padding: 28px 14px 24px; }
    .games-grid { gap:14px; padding:14px 14px 100px; }
    .game-thumb { height:150px; font-size:48px; }
    .game-info { padding:14px; }
    .game-info h3 { font-size:16px; }
    .stats-bar { gap:10px; }
}

/* FIX PC FLICKER: Disable expensive effects on PC with hover */
@media (hover: hover) and (pointer: fine) {
    /* Reduce backdrop-filter intensity on PC to prevent GPU flicker */
    .navbar { backdrop-filter: blur(12px) saturate(1.1); -webkit-backdrop-filter: blur(12px) saturate(1.1); }
    /* Disable 3D tilt - causes flicker on many PC GPUs */
    .game-card { transform: none !important; }
    .game-card:hover { transform: translateY(-4px) !important; }
    /* No scale on thumb hover on PC - flicker free */
    .game-card:hover .game-thumb { transform: none; }
    /* Canvas stable */
    canvas { transform: none !important; }
}

/* Scrollbar */
*::-webkit-scrollbar { width:8px; height:8px; }
*::-webkit-scrollbar-thumb { background: var(--border); border-radius:100px; }
*::-webkit-scrollbar-track { background: transparent; }

/* Selection */
::selection { background: rgba(231,76,60,0.3); color: white; }

.lang-pick { display:inline-flex; align-items:center; }
.lang-pick select {
    background: var(--bg-card);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 6px 10px;
    font-size: 13px;
    max-width: 140px;
    cursor: pointer;
}


/* Branded dialogs (alert / confirm / prompt) */
.ui-dlg{position:fixed;inset:0;z-index:10050;display:flex;align-items:center;justify-content:center;padding:20px}
.ui-dlg[hidden]{display:none!important}
.ui-dlg-scrim{position:absolute;inset:0;background:rgba(6,3,3,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.ui-dlg-card{position:relative;width:min(440px,100%);background:var(--bg-card,#1a1212);border:1px solid var(--border,#3a2323);border-radius:20px;padding:22px 20px 18px;box-shadow:0 24px 80px rgba(0,0,0,.55),0 0 0 1px rgba(231,76,60,.12);animation:uiDlgIn .28s cubic-bezier(.16,1,.3,1)}
.ui-dlg-kicker{font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--primary,#E74C3C);margin-bottom:6px}
.ui-dlg-title{font-size:1.15rem;font-weight:800;letter-spacing:-.3px;margin:0 0 8px;color:var(--text,#f8fafc);line-height:1.25}
.ui-dlg-body{margin:0 0 14px;color:var(--text-dim,#8b8fa8);font-size:14px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere;max-height:40vh;overflow:auto}
.ui-dlg-body:empty{display:none}
.ui-dlg-input{width:100%;margin:0 0 14px;padding:12px 14px;border-radius:12px;border:1px solid var(--border,#3a2323);background:rgba(0,0,0,.35);color:var(--text,#fff);font:inherit;font-size:16px}
.ui-dlg-input:focus{outline:none;border-color:var(--primary,#E74C3C);box-shadow:0 0 0 3px rgba(231,76,60,.18)}
.ui-dlg-input[hidden]{display:none!important}
.ui-dlg-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap}
.ui-dlg-btn{min-height:44px;padding:10px 16px;border-radius:12px;border:1px solid transparent;font:700 14px inherit;cursor:pointer}
.ui-dlg-btn.primary{background:linear-gradient(135deg,var(--primary,#E74C3C),#c0392b);color:#fff}
.ui-dlg-btn.ghost{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.1);color:var(--text,#fff)}
.ui-dlg.is-danger .ui-dlg-btn.primary{background:linear-gradient(135deg,#E74C3C,#9b1c1c)}
@keyframes uiDlgIn{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.ui-dlg-card{animation:none}}