/* ===== ZQGAME - Main Stylesheet ===== */
/* Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg-primary:#0a0e1a;
  --bg-secondary:#111827;
  --bg-card:#1a2236;
  --bg-card-hover:#222d45;
  --text-primary:#f1f5f9;
  --text-secondary:#94a3b8;
  --text-muted:#64748b;
  --accent-primary:#6366f1;
  --accent-secondary:#8b5cf6;
  --accent-tertiary:#06b6d4;
  --accent-gradient:linear-gradient(135deg,#6366f1 0%,#8b5cf6 50%,#06b6d4 100%);
  --accent-gradient-hover:linear-gradient(135deg,#818cf8 0%,#a78bfa 50%,#22d3ee 100%);
  --success:#10b981;
  --warning:#f59e0b;
  --danger:#ef4444;
  --border:#2d3748;
  --shadow-sm:0 1px 3px rgba(0,0,0,.3);
  --shadow-md:0 4px 12px rgba(0,0,0,.4);
  --shadow-lg:0 8px 30px rgba(0,0,0,.5);
  --shadow-glow:0 0 20px rgba(99,102,241,.4);
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:20px;
  --transition:all .25s cubic-bezier(.4,0,.2,1);
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Segoe UI',system-ui,-apple-system,sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.6;
  overflow-x:hidden;
  min-height:100vh;
}
body::before{
  content:'';position:fixed;top:0;left:0;width:100%;height:100%;
  background:
    radial-gradient(circle at 20% 20%,rgba(99,102,241,.08) 0%,transparent 50%),
    radial-gradient(circle at 80% 80%,rgba(6,182,212,.06) 0%,transparent 50%),
    radial-gradient(circle at 50% 50%,rgba(139,92,246,.04) 0%,transparent 70%);
  pointer-events:none;z-index:0;
}
a{color:inherit;text-decoration:none;transition:var(--transition)}
img{max-width:100%;display:block}
button{cursor:pointer;font-family:inherit;border:none;background:none;color:inherit}
ul{list-style:none}

/* ===== Layout ===== */
.container{max-width:1280px;margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ===== Header / Nav ===== */
.header{
  position:sticky;top:0;z-index:100;
  background:rgba(10,14,26,.85);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.5rem;font-weight:800;letter-spacing:-.5px}
.logo-icon{
  width:40px;height:40px;border-radius:10px;
  background:var(--accent-gradient);
  display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;font-weight:900;color:#fff;
  box-shadow:var(--shadow-glow);
  position:relative;overflow:hidden;
}
.logo-icon::after{
  content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;
  background:linear-gradient(45deg,transparent 40%,rgba(255,255,255,.2) 50%,transparent 60%);
  animation:shimmer 3s infinite;
}
@keyframes shimmer{0%{transform:translateX(-100%) rotate(45deg)}100%{transform:translateX(100%) rotate(45deg)}}
.logo-text{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-links{display:flex;gap:8px;align-items:center}
.nav-link{
  padding:8px 16px;border-radius:var(--radius-sm);
  color:var(--text-secondary);font-weight:500;font-size:.95rem;
  transition:var(--transition);
}
.nav-link:hover,.nav-link.active{color:var(--text-primary);background:rgba(99,102,241,.15)}
.nav-cta{
  padding:10px 24px;border-radius:var(--radius-sm);
  background:var(--accent-gradient);color:#fff;font-weight:600;
  box-shadow:var(--shadow-glow);transition:var(--transition);
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 0 30px rgba(99,102,241,.6)}
.lang-selector{display:flex;gap:4px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:3px;margin-right:8px}
.lang-option{background:none;border:none;color:var(--text-muted);font-size:.75rem;font-weight:700;padding:4px 8px;border-radius:6px;cursor:pointer;transition:var(--transition);font-family:inherit}
.lang-option:hover{color:var(--text-primary);background:rgba(255,255,255,.08)}
.lang-option.active{background:var(--primary);color:#fff;box-shadow:0 0 12px rgba(99,102,241,.5)}
@media(max-width:900px){.lang-selector{display:none}}
.mobile-toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.mobile-toggle span{width:24px;height:2px;background:var(--text-primary);border-radius:2px;transition:var(--transition)}

/* ===== Hero Section ===== */
.hero{
  padding:80px 0 60px;text-align:center;position:relative;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:50px;
  background:rgba(99,102,241,.15);border:1px solid rgba(99,102,241,.3);
  color:var(--accent-tertiary);font-size:.85rem;font-weight:600;
  margin-bottom:24px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--success);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{
  font-size:clamp(2.5rem,6vw,4.5rem);font-weight:900;line-height:1.1;
  margin-bottom:20px;letter-spacing:-1px;
}
.hero h1 .gradient{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{
  font-size:clamp(1rem,2vw,1.25rem);color:var(--text-secondary);
  max-width:600px;margin:0 auto 40px;
}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 32px;border-radius:var(--radius-md);
  font-weight:600;font-size:1rem;transition:var(--transition);
  border:1px solid transparent;
}
.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 0 40px rgba(99,102,241,.7)}
.btn-secondary{background:var(--bg-card);color:var(--text-primary);border-color:var(--border)}
.btn-secondary:hover{background:var(--bg-card-hover);border-color:var(--accent-primary)}

/* ===== Stats Bar ===== */
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:40px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  margin-bottom:60px;
}
.stat-item{text-align:center}
.stat-number{font-size:2.5rem;font-weight:900;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{color:var(--text-secondary);font-size:.9rem;margin-top:4px}

/* ===== Section Headers ===== */
.section{padding:40px 0 60px}
.section-header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:32px;flex-wrap:wrap;gap:16px}
.section-title{font-size:1.75rem;font-weight:800;letter-spacing:-.5px}
.section-title .accent{color:var(--accent-tertiary)}
.section-subtitle{color:var(--text-secondary);font-size:.95rem;margin-top:4px}
.view-all{color:var(--accent-tertiary);font-weight:600;font-size:.9rem;display:flex;align-items:center;gap:4px}
.view-all:hover{gap:8px}

/* ===== Filter Tabs ===== */
.filter-tabs{display:flex;gap:8px;margin-bottom:32px;flex-wrap:wrap}
.filter-tab{
  padding:8px 20px;border-radius:50px;
  background:var(--bg-card);color:var(--text-secondary);
  font-weight:500;font-size:.9rem;transition:var(--transition);
  border:1px solid var(--border);
}
.filter-tab:hover{color:var(--text-primary);border-color:var(--accent-primary)}
.filter-tab.active{background:var(--accent-gradient);color:#fff;border-color:transparent;box-shadow:var(--shadow-glow)}

/* ===== Game Grid ===== */
.game-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:24px;
}
.game-card{
  background:var(--bg-card);border-radius:var(--radius-lg);
  overflow:hidden;transition:var(--transition);cursor:pointer;
  border:1px solid var(--border);position:relative;
}
.game-card:hover{
  transform:translateY(-6px);border-color:var(--accent-primary);
  box-shadow:var(--shadow-lg),0 0 30px rgba(99,102,241,.2);
}
.game-thumb{
  aspect-ratio:16/10;position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
}
.game-thumb .game-emoji{font-size:4rem;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3))}
.game-thumb::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(0,0,0,.4) 100%);
}
.game-card-info{padding:16px 20px 20px}
.game-card-title{font-size:1.15rem;font-weight:700;margin-bottom:4px}
.game-card-desc{color:var(--text-secondary);font-size:.85rem;margin-bottom:12px;line-height:1.4}
.game-card-meta{display:flex;align-items:center;justify-content:space-between}
.game-category{
  padding:3px 10px;border-radius:50px;font-size:.75rem;font-weight:600;
  background:rgba(99,102,241,.15);color:var(--accent-tertiary);
}
.game-difficulty{font-size:.8rem;color:var(--text-muted)}
.game-difficulty.hard{color:var(--danger)}
.game-difficulty.medium{color:var(--warning)}
.game-difficulty.easy{color:var(--success)}
.play-overlay{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(10,14,26,.7);opacity:0;transition:var(--transition);z-index:2;
}
.game-card:hover .play-overlay{opacity:1}
.play-btn{
  width:60px;height:60px;border-radius:50%;
  background:var(--accent-gradient);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-glow);transform:scale(.8);transition:var(--transition);
}
.game-card:hover .play-btn{transform:scale(1)}
.play-btn svg{width:24px;height:24px;fill:#fff;margin-left:3px}

/* ===== Featured Game Banner ===== */
.featured-banner{
  background:var(--accent-gradient);border-radius:var(--radius-lg);
  padding:48px;margin-bottom:60px;position:relative;overflow:hidden;
}
.featured-banner::before{
  content:'';position:absolute;top:-50%;right:-20%;width:60%;height:200%;
  background:radial-gradient(circle,rgba(255,255,255,.1) 0%,transparent 70%);
}
.featured-content{position:relative;z-index:1;max-width:500px}
.featured-tag{
  display:inline-block;padding:4px 12px;border-radius:50px;
  background:rgba(255,255,255,.2);color:#fff;font-size:.8rem;font-weight:700;
  margin-bottom:16px;text-transform:uppercase;letter-spacing:1px;
}
.featured-title{font-size:2.5rem;font-weight:900;color:#fff;margin-bottom:12px}
.featured-desc{color:rgba(255,255,255,.85);font-size:1.05rem;margin-bottom:24px}
.featured-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 32px;border-radius:var(--radius-md);
  background:#fff;color:var(--accent-primary);font-weight:700;
  transition:var(--transition);
}
.featured-btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,0,0,.3)}

/* ===== Game Modal / Play Page ===== */
.game-modal-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.85);
  backdrop-filter:blur(8px);z-index:200;
  display:none;align-items:center;justify-content:center;padding:20px;
}
.game-modal-overlay.active{display:flex}
.game-modal{
  background:var(--bg-secondary);border-radius:var(--radius-lg);
  width:100%;max-width:1100px;max-height:92vh;overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow-lg);
  display:flex;flex-direction:column;
}
.game-modal-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;border-bottom:1px solid var(--border);
}
.game-modal-title{font-size:1.25rem;font-weight:700;display:flex;align-items:center;gap:10px}
.game-modal-close{
  width:36px;height:36px;border-radius:50%;
  background:var(--bg-card);display:flex;align-items:center;justify-content:center;
  transition:var(--transition);color:var(--text-secondary);
}
.game-modal-close:hover{background:var(--danger);color:#fff}
.game-modal-body{flex:1;overflow:auto;padding:24px;display:flex;flex-direction:column;align-items:center}
.game-canvas-wrapper{
  width:100%;display:flex;justify-content:center;align-items:center;
  margin-bottom:20px;min-height:400px;
}
.game-controls{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-bottom:16px}
.game-score-display{
  display:flex;gap:24px;margin-bottom:16px;
}
.score-box{
  background:var(--bg-card);padding:12px 24px;border-radius:var(--radius-md);
  text-align:center;min-width:100px;
}
.score-box-label{font-size:.75rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px}
.score-box-value{font-size:1.5rem;font-weight:800;color:var(--accent-tertiary)}

/* ===== Leaderboard ===== */
.leaderboard{
  background:var(--bg-card);border-radius:var(--radius-md);
  padding:20px;width:100%;max-width:400px;
}
.leaderboard-title{font-size:1rem;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.leaderboard-list{display:flex;flex-direction:column;gap:8px}
.leaderboard-item{
  display:flex;align-items:center;gap:12px;
  padding:10px 14px;border-radius:var(--radius-sm);
  background:var(--bg-secondary);transition:var(--transition);
}
.leaderboard-item:hover{background:var(--bg-card-hover)}
.leaderboard-rank{
  width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:.8rem;font-weight:700;flex-shrink:0;
}
.leaderboard-rank.rank-1{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#000}
.leaderboard-rank.rank-2{background:linear-gradient(135deg,#d1d5db,#9ca3af);color:#000}
.leaderboard-rank.rank-3{background:linear-gradient(135deg,#fb923c,#ea580c);color:#fff}
.leaderboard-rank:not(.rank-1):not(.rank-2):not(.rank-3){background:var(--bg-card);color:var(--text-secondary)}
.leaderboard-name{flex:1;font-weight:500;font-size:.9rem}
.leaderboard-score{font-weight:700;color:var(--accent-tertiary);font-size:.9rem}

/* ===== Footer ===== */
.footer{
  background:var(--bg-secondary);border-top:1px solid var(--border);
  padding:60px 0 30px;margin-top:60px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand p{color:var(--text-secondary);font-size:.9rem;margin-top:16px;max-width:300px}
.footer-col h4{font-size:.95rem;font-weight:700;margin-bottom:16px;color:var(--text-primary)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--text-secondary);font-size:.9rem;transition:var(--transition)}
.footer-col a:hover{color:var(--accent-tertiary)}
.footer-bottom{
  border-top:1px solid var(--border);padding-top:24px;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;
}
.footer-copyright{color:var(--text-muted);font-size:.85rem}
.footer-social{display:flex;gap:12px}
.footer-social a{
  width:36px;height:36px;border-radius:50%;
  background:var(--bg-card);display:flex;align-items:center;justify-content:center;
  color:var(--text-secondary);transition:var(--transition);
}
.footer-social a:hover{background:var(--accent-gradient);color:#fff;transform:translateY(-2px)}

/* ===== Game-specific canvas styles ===== */
#gameCanvas{
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-md);
  background:#000;
  max-width:100%;
  touch-action:none;
}

/* ===== Responsive ===== */
@media(max-width:968px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:var(--bg-secondary);padding:20px;border-bottom:1px solid var(--border);gap:4px}
  .nav-links.open{display:flex}
  .mobile-toggle{display:flex}
  .hero{padding:50px 0 40px}
  .featured-banner{padding:32px 24px}
  .featured-title{font-size:1.75rem}
  .game-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px}
  .game-thumb .game-emoji{font-size:2.5rem}
  .footer-grid{grid-template-columns:1fr}
  .section-header{flex-direction:column;align-items:flex-start}
}
@media(max-width:480px){
  .container{padding:0 16px}
  .stats-bar{grid-template-columns:1fr 1fr;gap:16px}
  .stat-number{font-size:1.75rem}
  .game-grid{grid-template-columns:1fr 1fr}
  .game-card-info{padding:12px}
  .game-card-title{font-size:1rem}
}

/* ===== Enhanced Responsive ===== */
@media(max-width:600px){
  .search-box{width:100%}
  .search-box input{width:100%!important}
  .section-header{flex-direction:column;align-items:stretch}
  .game-modal{max-height:95vh;border-radius:12px}
  .game-modal-header{padding:12px 16px}
  .game-modal-body{padding:12px}
  .game-score-display{gap:8px}
  .score-box{padding:8px 12px;min-width:70px}
  .score-box-value{font-size:1.2rem}
  .hero h1{font-size:2rem}
  .hero p{font-size:.95rem}
  .btn{padding:12px 24px;font-size:.9rem}
  .stats-bar{grid-template-columns:1fr 1fr;gap:16px;padding:24px 0}
  .stat-number{font-size:1.5rem}
  .featured-banner{padding:24px 20px}
  .featured-title{font-size:1.5rem}
  .nav-cta{padding:8px 16px;font-size:.85rem}
  .filter-tabs{gap:6px}
  .filter-tab{padding:6px 14px;font-size:.8rem}
  .leaderboard{max-width:100%}
}

@media(min-width:601px) and (max-width:1024px){
  .game-grid{grid-template-columns:repeat(3,1fr)}
}

@media(min-width:1025px){
  .game-grid{grid-template-columns:repeat(4,1fr)}
}

/* Touch device optimizations */
@media(hover:none){
  .game-card:hover{transform:none}
  .play-overlay{display:none}
  .nav-link:active{background:rgba(99,102,241,.2)}
  .filter-tab:active{transform:scale(0.95)}
}

/* Safe area for notched phones */
@supports(padding:max(0px)){
  .container{padding-left:max(24px,env(safe-area-inset-left));padding-right:max(24px,env(safe-area-inset-right))}
  .header{padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}
}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
}

/* ===== Utility ===== */
.hidden{display:none!important}
.text-center{text-align:center}
.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}
.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}

/* ===== Loading spinner ===== */
.spinner{
  width:40px;height:40px;border:3px solid var(--border);
  border-top-color:var(--accent-primary);border-radius:50%;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== Toast notification ===== */
.toast{
  position:fixed;bottom:24px;right:24px;z-index:300;
  padding:14px 24px;border-radius:var(--radius-md);
  background:var(--bg-card);border:1px solid var(--border);
  box-shadow:var(--shadow-lg);font-size:.9rem;font-weight:500;
  transform:translateY(100px);opacity:0;transition:var(--transition);
  max-width:320px;
}
.toast.show{transform:translateY(0);opacity:1}
.toast.success{border-color:var(--success)}
.toast.error{border-color:var(--danger)}

/* ===== Game Modal Sidebar Layout ===== */
.game-layout{
  display:flex;gap:20px;width:100%;align-items:flex-start;
}
.game-main-area{
  flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;
}
.game-sidebar{
  width:220px;flex-shrink:0;position:sticky;top:0;
}
.game-sidebar .leaderboard{
  width:100%;max-width:100%;padding:14px;
}
.game-sidebar .leaderboard-title{
  font-size:.9rem;margin-bottom:10px;
}
.game-sidebar .leaderboard-item{
  padding:6px 10px;
}
.game-sidebar .leaderboard-rank{
  width:22px;height:22px;font-size:.7rem;
}
.game-sidebar .leaderboard-name{
  font-size:.8rem;
}
.game-sidebar .leaderboard-score{
  font-size:.8rem;
}

/* ===== Score Submission Modal ===== */
.score-modal-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.8);
  backdrop-filter:blur(8px);z-index:500;
  display:none;align-items:center;justify-content:center;padding:20px;
}
.score-modal-overlay.active{display:flex}
.score-modal{
  background:var(--bg-secondary);border-radius:var(--radius-lg);
  padding:32px;width:100%;max-width:380px;
  border:1px solid var(--border);box-shadow:var(--shadow-lg);
  text-align:center;animation:scoreModalIn .3s ease;
}
@keyframes scoreModalIn{
  from{transform:scale(.9);opacity:0}
  to{transform:scale(1);opacity:1}
}
.score-modal-title{
  font-size:1.5rem;font-weight:800;margin-bottom:8px;
  background:var(--accent-gradient);-webkit-background-clip:text;
  -webkit-text-fill-color:transparent;background-clip:text;
}
.score-modal-score{
  font-size:1.1rem;color:var(--text-secondary);margin-bottom:20px;
}
.score-modal-score span{
  color:var(--accent-tertiary);font-weight:700;font-size:1.3rem;
}
.score-modal input{
  width:100%;padding:12px 16px;border-radius:var(--radius-sm);
  border:2px solid var(--border);background:var(--bg-card);
  color:var(--text-primary);font-size:1rem;outline:none;
  margin-bottom:16px;transition:border-color .2s;text-align:center;
}
.score-modal input:focus{border-color:var(--accent-primary)}
.score-modal-buttons{
  display:flex;gap:10px;justify-content:center;
}

/* ===== Responsive: game modal sidebar ===== */
@media(max-width:768px){
  .game-layout{flex-direction:column}
  .game-sidebar{width:100%;position:static}
  .game-sidebar .leaderboard{max-width:100%}
}
@media(max-width:480px){
  .score-modal{padding:24px 20px}
  .score-modal-buttons{flex-direction:column}
  .score-modal-buttons .btn{width:100%}
}