/* Fonts loaded from Google Fonts in index.html */



  /* =========================================================
     TOKENS DÙNG CHUNG (không phụ thuộc theme)
     ========================================================= */
  :root{
    --sp-1:6px; --sp-2:10px; --sp-3:16px; --sp-4:24px;
    --sp-5:36px; --sp-6:52px; --sp-7:80px;
    --maxw:1200px;
    --header-h:74px;
    --radius-pill:999px;
  }

  /* =========================================================
     THEME · KID  (Arcade Kid — MẶC ĐỊNH, cho trẻ em)
     Vui tươi, tròn trịa, neon dịu, nền xanh đêm.
     ========================================================= */
  [data-theme="kid"]{
    --bg:#0b1020;
    --bg-2:#0d142a;
    --surface:#141a30;
    --surface-2:#1a2240;
    --surface-3:#212a4d;
    --border:rgba(148,163,184,.16);
    --border-strong:rgba(148,163,184,.30);

    --text:#e5e7eb;
    --text-muted:#94a3b8;
    --text-faint:#64748b;

    --accent:#22d3ee;     /* cyan */
    --accent-2:#f472b6;   /* hồng */
    --brand:#fbbf24;      /* vàng-cam ấm — Cửu Long */

    --on-accent:#04222b;
    --on-brand:#1a1206;
    --on-primary:#1a1206;

    --grad-primary:linear-gradient(135deg,var(--brand),#ffd470);
    --grad-accent:linear-gradient(135deg,var(--accent),#7af0ff);
    --grad-brandtext:linear-gradient(92deg,var(--accent),var(--accent-2) 60%,var(--brand));

    --radius:20px;
    --radius-lg:28px;
    --radius-sm:12px;

    --font-display:"Baloo 2","Inter",sans-serif;
    --font-body:"Inter",system-ui,sans-serif;
    --display-ls:-.4px;
    --display-weight:800;
    --label-tt:none;
    --label-ls:.2px;

    --glow-accent:0 0 0 1px color-mix(in srgb,var(--accent) 35%,transparent), 0 8px 32px -8px color-mix(in srgb,var(--accent) 45%,transparent);
    --glow-brand:0 0 0 1px color-mix(in srgb,var(--brand) 40%,transparent), 0 10px 30px -6px color-mix(in srgb,var(--brand) 50%,transparent);
    --shadow-sm:0 4px 14px -6px rgba(0,0,0,.55);
    --shadow:0 14px 40px -16px rgba(0,0,0,.7);
    --shadow-lg:0 30px 70px -28px rgba(0,0,0,.8);

    --grid-color:rgba(148,163,184,.05);
    --grid-size:46px;
    --scanline:0;

    --ease:cubic-bezier(.2,.9,.3,1.4);
    --dur:.22s;
    --hover-lift:-6px;
    --success:#34d399;
  }

  /* =========================================================
     THEME · PRO  (Cyber Pro — cho thanh niên, chất esports)
     Tối sâu, sắc cạnh, tương phản cao, sci-fi/đấu trường.
     ========================================================= */
  [data-theme="pro"]{
    --bg:#06080f;
    --bg-2:#080b16;
    --surface:#0d1220;
    --surface-2:#121a2c;
    --surface-3:#19243c;
    --border:rgba(0,229,255,.16);
    --border-strong:rgba(124,58,237,.4);

    --text:#e9eef9;
    --text-muted:#8b97b3;
    --text-faint:#5b6788;

    --accent:#00e5ff;     /* cyan điện */
    --accent-2:#7c3aed;   /* tím */
    --brand:#ff2e63;      /* crimson nhấn */

    --on-accent:#04181f;
    --on-brand:#ffffff;
    --on-primary:#ffffff;

    --grad-primary:linear-gradient(135deg,var(--accent-2),var(--brand));
    --grad-accent:linear-gradient(135deg,var(--accent),#3df0ff);
    --grad-brandtext:linear-gradient(92deg,var(--accent),var(--accent-2) 55%,var(--brand));

    --radius:8px;
    --radius-lg:12px;
    --radius-sm:5px;

    --font-display:"Chakra Petch","Exo 2","Inter",sans-serif;
    --font-body:"Inter",system-ui,sans-serif;
    --display-ls:.5px;
    --display-weight:800;
    --label-tt:uppercase;
    --label-ls:1.2px;

    --glow-accent:0 0 0 1px color-mix(in srgb,var(--accent) 50%,transparent), 0 6px 26px -6px color-mix(in srgb,var(--accent) 60%,transparent);
    --glow-brand:0 0 0 1px color-mix(in srgb,var(--brand) 55%,transparent), 0 8px 26px -6px color-mix(in srgb,var(--brand) 55%,transparent);
    --shadow-sm:0 3px 12px -5px rgba(0,0,0,.7);
    --shadow:0 12px 34px -14px rgba(0,0,0,.85);
    --shadow-lg:0 26px 64px -26px rgba(0,0,0,.9);

    --grid-color:rgba(0,229,255,.06);
    --grid-size:40px;
    --scanline:.55;

    --ease:cubic-bezier(.2,.7,.2,1);
    --dur:.14s;
    --hover-lift:-4px;
    --success:#22c55e;
  }

  /* =========================================================
     RESET
     ========================================================= */
  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:var(--font-body);
    background:var(--bg);
    color:var(--text);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
    position:relative;
    min-height:100vh;
    transition:background .4s ease, color .4s ease;
  }
  /* Ánh sáng nền dịu (đổi màu theo theme qua biến accent/brand) */
  body::before{
    content:"";position:fixed;inset:0;z-index:-2;
    background:
      radial-gradient(60% 50% at 12% -5%, color-mix(in srgb,var(--accent) 16%,transparent), transparent 60%),
      radial-gradient(55% 45% at 95% 0%, color-mix(in srgb,var(--accent-2) 16%,transparent), transparent 60%),
      radial-gradient(70% 55% at 50% 110%, color-mix(in srgb,var(--brand) 12%,transparent), transparent 60%),
      linear-gradient(180deg,var(--bg),var(--bg-2));
    transition:background .4s ease;
  }
  /* Lưới mờ gợi không gian cyber */
  body::after{
    content:"";position:fixed;inset:0;z-index:-1;opacity:.6;
    background-image:
      linear-gradient(var(--grid-color) 1px,transparent 1px),
      linear-gradient(90deg,var(--grid-color) 1px,transparent 1px);
    background-size:var(--grid-size) var(--grid-size);
    mask-image:radial-gradient(85% 65% at 50% 30%,#000,transparent 85%);
  }
  /* Scanline tinh tế — chỉ hiện ở theme Pro (qua --scanline) */
  .fx-scanline{
    position:fixed;inset:0;z-index:-1;pointer-events:none;
    opacity:var(--scanline);
    background:repeating-linear-gradient(180deg,transparent 0 2px,rgba(0,0,0,.5) 2px 3px);
    mix-blend-mode:overlay;
  }

  img{max-width:100%;display:block}
  button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
  a{color:inherit;text-decoration:none}
  ul{list-style:none}

  h1,h2,h3,h4,.font-display{
    font-family:var(--font-display);
    line-height:1.15;
    letter-spacing:var(--display-ls);
  }

  /* Focus rõ ràng, dễ thấy cho trẻ em */
  :focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:8px}

  .wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(16px,4vw,28px)}

  /* ===== Nút bấm (>=44px) ===== */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:9px;
    min-height:48px;padding:0 22px;border-radius:var(--radius-pill);
    font-weight:700;font-size:15px;letter-spacing:var(--label-ls);
    text-transform:var(--label-tt);
    transition:transform var(--dur) var(--ease), box-shadow var(--dur) ease, background var(--dur) ease, color var(--dur) ease;
    white-space:nowrap;
  }
  .btn:active{transform:translateY(1px) scale(.98)}

  .btn-primary{color:var(--on-primary);background:var(--grad-primary);box-shadow:var(--glow-brand)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px color-mix(in srgb,var(--brand) 60%,transparent),0 16px 40px -10px color-mix(in srgb,var(--brand) 65%,transparent)}

  .btn-accent{color:var(--on-accent);background:var(--grad-accent);box-shadow:var(--glow-accent)}
  .btn-accent:hover{transform:translateY(-2px);box-shadow:0 0 0 1px color-mix(in srgb,var(--accent) 60%,transparent),0 16px 40px -10px color-mix(in srgb,var(--accent) 60%,transparent)}

  .btn-ghost{color:var(--text);background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--border)}
  .btn-ghost:hover{background:var(--surface-3);box-shadow:inset 0 0 0 1px var(--border-strong);transform:translateY(-2px)}

  .btn-lg{min-height:60px;padding:0 34px;font-size:18px}

  .chip{
    display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 13px;
    border-radius:var(--radius-pill);font-size:12.5px;font-weight:600;
    letter-spacing:var(--label-ls);text-transform:var(--label-tt);
    background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--border);color:var(--text-muted);
  }

  /* =========================================================
     HEADER
     ========================================================= */
  .site-header{
    position:sticky;top:0;z-index:50;height:var(--header-h);display:flex;align-items:center;
    background:color-mix(in srgb,var(--bg) 72%,transparent);
    backdrop-filter:blur(16px) saturate(140%);
    border-bottom:1px solid var(--border);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}

  .logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
  .logo-mark{
    width:46px;height:46px;flex-shrink:0;display:grid;place-items:center;font-size:26px;
    border-radius:var(--radius-sm);
    background:radial-gradient(120% 120% at 30% 20%,var(--surface-3),var(--bg-2));
    box-shadow:var(--glow-accent), inset 0 0 18px color-mix(in srgb,var(--accent) 25%,transparent);
    animation:floaty 4s ease-in-out infinite;
  }
  @keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
  .logo-text{display:flex;flex-direction:column;line-height:1}
  .logo-text b{
    font-family:var(--font-display);font-weight:800;font-size:19px;letter-spacing:.3px;
    background:var(--grad-brandtext);-webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .logo-text span{font-size:11px;color:var(--text-muted);font-weight:600;letter-spacing:1.5px;text-transform:uppercase}

  .header-tools{display:flex;align-items:center;gap:12px}

  /* Nút gạt theme (demo) */
  .theme-switch{display:flex;gap:4px;padding:4px;border-radius:var(--radius-pill);background:var(--bg-2);box-shadow:inset 0 0 0 1px var(--border)}
  .theme-switch button{
    min-height:36px;padding:0 14px;border-radius:var(--radius-pill);
    font-size:12.5px;font-weight:700;color:var(--text-muted);
    letter-spacing:var(--label-ls);text-transform:var(--label-tt);
    transition:all var(--dur) var(--ease);
  }
  .theme-switch button[aria-pressed="true"]{color:var(--on-accent);background:var(--grad-accent);box-shadow:var(--glow-accent)}

  /* Nút chọn ngôn ngữ */
  .lang-switch{display:flex;gap:4px;padding:4px;border-radius:var(--radius-pill);background:var(--bg-2);box-shadow:inset 0 0 0 1px var(--border)}
  .lang-switch button{
    min-height:36px;padding:0 14px;border-radius:var(--radius-pill);
    font-size:12.5px;font-weight:700;color:var(--text-muted);
    letter-spacing:var(--label-ls);text-transform:var(--label-tt);
    transition:all var(--dur) var(--ease);
  }
  .lang-switch button[aria-pressed="true"]{color:var(--on-accent);background:var(--grad-accent);box-shadow:var(--glow-accent)}

  .account{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .auth-trigger{display:flex;gap:10px}
  .auth-trigger.hide{display:none}

  .user-box{display:none;align-items:center;gap:12px}
  .user-box.show{display:flex}
  .user-pill{
    display:flex;align-items:center;gap:10px;padding:6px 8px 6px 6px;
    background:var(--surface-2);border-radius:var(--radius-pill);box-shadow:inset 0 0 0 1px var(--border);
    flex-shrink:0;
    transition: transform var(--dur) var(--ease), background var(--dur) ease, box-shadow var(--dur) ease;
  }
  .user-pill:hover {
    transform: translateY(-2.5px);
    background: var(--surface-3) !important;
    box-shadow: inset 0 0 0 1px var(--border-strong) !important;
  }
  .user-pill:active {
    transform: translateY(0);
  }
  .avatar{
    width:36px;height:36px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;font-size:18px;
    background:var(--grad-primary);box-shadow:0 0 0 2px color-mix(in srgb,var(--accent-2) 40%,transparent);
  }
  .user-name{
    font-weight:700;font-size:14px;padding-right:4px;
    white-space:nowrap;
    max-width:140px;
    overflow:hidden;
    text-overflow:ellipsis;
  }
  .avatar-menu-container{flex-shrink:0}

  /* Interactive Header Elements Polish */
  .balance-chip {
    cursor: pointer;
    transition: transform var(--dur) var(--ease), background var(--dur) ease, box-shadow var(--dur) ease;
  }
  .balance-chip:hover {
    transform: translateY(-2px);
    background: var(--surface-3) !important;
    box-shadow: inset 0 0 0 1px var(--border-strong) !important;
  }
  .balance-chip:active {
    transform: translateY(0);
  }

  .energy-widget {
    transition: transform var(--dur) var(--ease), background var(--dur) ease, box-shadow var(--dur) ease;
  }
  .energy-widget:hover {
    transform: translateY(-2px);
    background: var(--surface-3) !important;
    box-shadow: inset 0 0 0 1px var(--border-strong) !important;
  }
  .energy-widget:active {
    transform: translateY(0);
  }

  /* Dropdown Menu styling and animation */
  .dropdown-menu {
    animation: dropdownFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }
  @keyframes dropdownFadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .dropdown-menu .btn {
    border: 1px solid transparent !important;
    transition: background var(--dur) ease, color var(--dur) ease, border-color var(--dur) ease !important;
  }
  .dropdown-menu .btn:hover {
    background: var(--surface-2) !important;
    border-color: var(--border-strong) !important;
    transform: none !important;
  }

  /* Responsive Spacing & Header Controls */
  @media (max-width: 860px) {
    .header-inner { gap: 8px !important; }
    .header-tools { gap: 6px !important; }
    .user-box { gap: 8px !important; }
    .header-status { gap: 6px !important; }
  }
  @media (max-width: 680px) {
    .lang-switch { display: none !important; }
  }
  @media (max-width: 520px) {
    .logo-text { display: none !important; }
    .energy-bar-outer { display: none !important; }
    #headerRegenTimer { display: none !important; }
    .energy-widget { padding: 4px 8px !important; gap: 4px !important; }
    .chip { padding: 0 8px !important; gap: 4px !important; }
  }

  /* =========================================================
     HERO
     ========================================================= */
  .hero{position:relative;padding:clamp(40px,7vw,84px) 0 clamp(30px,5vw,56px)}
  .hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,5vw,56px);align-items:center}
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;height:34px;padding:0 15px;
    border-radius:var(--radius-pill);font-size:13px;font-weight:600;color:var(--accent);
    letter-spacing:var(--label-ls);text-transform:var(--label-tt);
    background:color-mix(in srgb,var(--accent) 14%,transparent);
    box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent) 32%,transparent);
  }
  .hero h1{font-size:clamp(34px,6vw,58px);font-weight:var(--display-weight);margin-bottom:18px}
  .hero h1 .brand{background:var(--grad-primary);-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero h1 .neon{background:var(--grad-brandtext);-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero p.lead{font-size:clamp(16px,2vw,19px);color:var(--text-muted);max-width:46ch;margin-bottom:30px}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
  .hero-stats{display:flex;gap:26px;margin-top:34px;flex-wrap:wrap}
  .hero-stats .stat b{display:block;font-family:var(--font-display);font-weight:800;font-size:26px;color:var(--text)}
  .hero-stats .stat span{font-size:13px;color:var(--text-muted)}

  .hero-art{position:relative;display:grid;place-items:center;min-height:280px}
  .dragon-orb{
    width:min(320px,80%);aspect-ratio:1;border-radius:50%;display:grid;place-items:center;
    font-size:clamp(110px,18vw,160px);position:relative;
    background:
      radial-gradient(60% 60% at 35% 30%,color-mix(in srgb,var(--accent) 38%,transparent),transparent 60%),
      radial-gradient(60% 60% at 70% 75%,color-mix(in srgb,var(--accent-2) 35%,transparent),transparent 60%),
      radial-gradient(120% 120% at 50% 50%,var(--surface-3),var(--bg-2));
    box-shadow:var(--glow-accent),var(--shadow-lg);
    animation:floaty 5s ease-in-out infinite;
  }
  .dragon-orb::after{
    content:"";position:absolute;inset:-2px;border-radius:50%;z-index:-1;filter:blur(22px);opacity:.45;
    background:conic-gradient(from 0deg,var(--accent),var(--accent-2),var(--brand),var(--accent));
    animation:spin 14s linear infinite;
  }
  @keyframes spin{to{transform:rotate(360deg)}}
  .orbit{
    position:absolute;font-size:30px;background:var(--surface-2);width:58px;height:58px;border-radius:var(--radius);
    display:grid;place-items:center;box-shadow:var(--shadow),inset 0 0 0 1px var(--border);
    animation:floaty 4s ease-in-out infinite;
  }
  .orbit.o1{top:6%;right:14%;animation-delay:.4s}
  .orbit.o2{bottom:10%;left:6%;animation-delay:1.1s}
  .orbit.o3{bottom:26%;right:4%;animation-delay:.8s}

  /* =========================================================
     SECTIONS chung
     ========================================================= */
  .section{padding:clamp(34px,5vw,58px) 0}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:clamp(20px,3vw,30px);flex-wrap:wrap}
  .section-head h2{font-size:clamp(24px,3.6vw,34px);font-weight:var(--display-weight);display:flex;align-items:center;gap:12px}
  .section-head p{color:var(--text-muted);font-size:14.5px;margin-top:4px}
  .section-emoji{width:46px;height:46px;border-radius:var(--radius-sm);display:grid;place-items:center;font-size:24px;background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--border)}

  /* =========================================================
     GAME GRID
     ========================================================= */
  .group{margin-bottom:clamp(34px,5vw,52px)}
  .group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;flex-wrap:wrap}
  .group-head h3{font-size:clamp(18px,2.6vw,23px);font-weight:700}
  .group-head .count{font-size:13px;color:var(--text-faint);font-weight:600}
  .group-bar{flex:1;height:1px;background:linear-gradient(90deg,var(--border-strong),transparent);min-width:30px}

  .game-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(232px,1fr))}

  .card{
    position:relative;background:var(--surface);border-radius:var(--radius);overflow:hidden;
    box-shadow:var(--shadow-sm),inset 0 0 0 1px var(--border);
    transition:transform var(--dur) var(--ease), box-shadow var(--dur) ease;
    display:flex;flex-direction:column;
  }
  .card:hover{transform:translateY(var(--hover-lift));box-shadow:var(--shadow),inset 0 0 0 1px var(--border-strong)}

  .card-thumb{aspect-ratio:16/10;position:relative;display:grid;place-items:center;font-size:54px;overflow:hidden}
  .card-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,color-mix(in srgb,var(--surface) 85%,transparent))}
  .card-thumb .emoji{position:relative;z-index:1;filter:drop-shadow(0 8px 16px rgba(0,0,0,.4));transition:transform .3s var(--ease)}
  .card:hover .card-thumb .emoji{transform:scale(1.12) rotate(-4deg)}

  .badge-genre{
    position:absolute;top:10px;left:10px;z-index:2;height:26px;padding:0 11px;border-radius:var(--radius-pill);
    font-size:11.5px;font-weight:700;letter-spacing:var(--label-ls);text-transform:var(--label-tt);
    background:color-mix(in srgb,var(--bg) 70%,transparent);backdrop-filter:blur(6px);
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.14);color:#fff;display:inline-flex;align-items:center;
  }
  .badge-live{
    position:absolute;top:10px;right:10px;z-index:2;height:26px;padding:0 11px 0 9px;border-radius:var(--radius-pill);
    font-size:11px;font-weight:800;letter-spacing:.4px;display:inline-flex;align-items:center;gap:6px;
    background:var(--accent);color:var(--on-accent);
  }
  .badge-live .dot{width:7px;height:7px;border-radius:50%;background:currentColor;animation:pulse 1.4s ease-in-out infinite}
  @keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
  .badge-soon{
    position:absolute;top:10px;right:10px;z-index:2;height:26px;padding:0 11px;border-radius:var(--radius-pill);
    font-size:11px;font-weight:700;letter-spacing:var(--label-ls);text-transform:var(--label-tt);
    background:color-mix(in srgb,var(--bg) 70%,transparent);backdrop-filter:blur(6px);
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.16);color:var(--text-muted);display:inline-flex;align-items:center;
  }

  .card-body{padding:14px 15px 16px;display:flex;flex-direction:column;gap:12px;flex:1}
  .card-title{font-family:var(--font-display);font-weight:700;font-size:17px;line-height:1.25}
  .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px}
  .card-meta{font-size:12px;color:var(--text-faint);display:flex;align-items:center;gap:6px}

  .play-btn{
    min-height:44px;padding:0 20px;border-radius:var(--radius-pill);font-weight:800;font-size:14px;
    letter-spacing:var(--label-ls);text-transform:var(--label-tt);
    color:var(--on-accent);background:var(--grad-accent);
    box-shadow:0 6px 18px -8px color-mix(in srgb,var(--accent) 70%,transparent);
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) ease;
  }
  .play-btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px -8px color-mix(in srgb,var(--accent) 90%,transparent)}

  .soon-tag{
    min-height:44px;padding:0 18px;border-radius:var(--radius-pill);font-weight:700;font-size:13px;
    letter-spacing:var(--label-ls);text-transform:var(--label-tt);color:var(--text-muted);
    background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--border);display:inline-flex;align-items:center;gap:7px;
  }

  .card.soon{opacity:.92}
  .card.soon .card-thumb{filter:saturate(.85)}
  .card.elite{box-shadow:var(--shadow-sm),inset 0 0 0 1px color-mix(in srgb,var(--brand) 22%,transparent)}
  .card.elite:hover{box-shadow:var(--shadow),0 0 0 1px color-mix(in srgb,var(--brand) 40%,transparent)}

  /* =========================================================
     LEADERBOARD
     ========================================================= */
  .board-wrap{display:grid;grid-template-columns:1.3fr .85fr;gap:22px;align-items:start}
  .panel{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm),inset 0 0 0 1px var(--border);padding:clamp(18px,2.5vw,26px)}
  .board-list{display:flex;flex-direction:column;gap:10px;margin-top:4px}
  .board-row{
    display:flex;align-items:center;gap:14px;padding:13px 15px;border-radius:var(--radius-sm);
    background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--border);
    transition:transform .15s var(--ease);
  }
  .board-row:hover{transform:translateX(3px)}
  .rank{
    width:38px;height:38px;flex-shrink:0;border-radius:var(--radius-sm);display:grid;place-items:center;
    font-family:var(--font-display);font-weight:800;font-size:16px;background:var(--surface-3);color:var(--text-muted);
  }
  .board-row.top-1 .rank{background:var(--grad-primary);color:var(--on-primary);box-shadow:var(--glow-brand)}
  .board-row.top-2 .rank{background:linear-gradient(135deg,#cbd5e1,#94a3b8);color:#1e293b}
  .board-row.top-3 .rank{background:linear-gradient(135deg,#d97746,#f0a868);color:#2a1505}
  .board-av{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-size:20px;background:var(--surface-3);box-shadow:inset 0 0 0 1px var(--border)}
  .board-name{flex:1;font-weight:700;font-size:15px}
  .board-name small{display:block;font-weight:500;font-size:12px;color:var(--text-faint)}
  .board-score{font-family:var(--font-display);font-weight:800;font-size:18px;color:var(--brand)}
  .board-score span{font-size:12px;color:var(--text-muted);font-weight:600;margin-left:2px}

  .empty-state{
    margin-top:18px;padding:26px 18px;text-align:center;border-radius:var(--radius-sm);
    border:1.5px dashed var(--border-strong);
    background:repeating-linear-gradient(135deg,transparent,transparent 9px,color-mix(in srgb,var(--text-muted) 5%,transparent) 9px,color-mix(in srgb,var(--text-muted) 5%,transparent) 18px);
    transition:border-color var(--dur) ease, background var(--dur) ease, transform var(--dur) var(--ease);
    animation: fadeIn var(--dur-normal) var(--ease);
  }
  .empty-state:hover {
    border-color: var(--accent);
    background: repeating-linear-gradient(135deg,transparent,transparent 9px,color-mix(in srgb,var(--accent) 3%,transparent) 9px,color-mix(in srgb,var(--accent) 3%,transparent) 18px);
    transform: translateY(-2px);
  }
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .empty-state .ico{font-size:38px;margin-bottom:8px}
  .empty-state p{color:var(--text-muted);font-size:14px}
  .empty-state b{color:var(--text)}

  .board-aside h3{font-size:19px;font-weight:700;margin-bottom:8px}
  .board-aside p{color:var(--text-muted);font-size:14px;margin-bottom:18px}
  .perk{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px}
  .perk .pi{width:38px;height:38px;flex-shrink:0;border-radius:var(--radius-sm);display:grid;place-items:center;font-size:19px;background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--border)}
  .perk b{font-size:14.5px;display:block}
  .perk small{color:var(--text-muted);font-size:13px}

  /* =========================================================
     AUTH MODAL
     ========================================================= */
  .modal-overlay{
    position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:20px;
    background:color-mix(in srgb,var(--bg) 70%,transparent);backdrop-filter:blur(8px);
  }
  .modal-overlay.open{display:flex;animation:fade .2s ease}
  @keyframes fade{from{opacity:0}to{opacity:1}}
  .modal{
    width:100%;max-width:430px;background:var(--surface);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-lg),inset 0 0 0 1px var(--border-strong);padding:clamp(22px,4vw,32px);position:relative;
    animation:pop .26s var(--ease);
  }
  @keyframes pop{from{transform:translateY(14px) scale(.96);opacity:0}to{transform:none;opacity:1}}
  .modal-close{
    position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-size:18px;
    background:var(--surface-2);color:var(--text-muted);box-shadow:inset 0 0 0 1px var(--border);transition:all .15s ease;
  }
  .modal-close:hover{background:var(--surface-3);color:var(--text)}
  .modal-brand{display:flex;align-items:center;gap:12px;margin-bottom:6px}
  .modal-brand .logo-mark{width:40px;height:40px;font-size:22px;animation:none}
  .modal h2{font-size:22px;font-weight:var(--display-weight)}
  .modal .sub{color:var(--text-muted);font-size:14px;margin-bottom:22px}

  .tabs{display:flex;gap:6px;padding:5px;background:var(--bg-2);border-radius:var(--radius-pill);margin-bottom:22px;box-shadow:inset 0 0 0 1px var(--border)}
  .tab{flex:1;min-height:44px;border-radius:var(--radius-pill);font-weight:700;font-size:14.5px;color:var(--text-muted);letter-spacing:var(--label-ls);text-transform:var(--label-tt);transition:all var(--dur) var(--ease)}
  .tab.active{color:var(--on-accent);background:var(--grad-accent);box-shadow:var(--glow-accent)}

  .field{margin-bottom:16px}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--text-muted);margin-bottom:7px}
  .field input{
    width:100%;min-height:50px;padding:0 16px;border-radius:var(--radius-sm);
    background:var(--bg-2);color:var(--text);font-size:15px;font-family:inherit;
    box-shadow:inset 0 0 0 1px var(--border);transition:box-shadow .16s ease;
  }
  .field input::placeholder{color:var(--text-faint)}
  .field input:focus{outline:none;box-shadow:inset 0 0 0 2px var(--accent)}

  .form-error{
    display:none;align-items:center;gap:9px;margin-bottom:16px;padding:11px 14px;border-radius:var(--radius-sm);
    background:color-mix(in srgb,var(--brand) 16%,transparent);color:color-mix(in srgb,var(--brand) 60%,#fff);
    font-size:13.5px;font-weight:600;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--brand) 30%,transparent);
  }
  .form-error.show{display:flex}

  .pane{display:none}
  .pane.active{display:block}
  .modal .btn{width:100%}
  .modal-hint{text-align:center;font-size:13px;color:var(--text-muted);margin-top:18px}
  .modal-hint button{color:var(--accent);font-weight:700}

  /* Google OAuth button */
  .btn-google{
    display:flex;align-items:center;justify-content:center;gap:10px;width:100%;
    min-height:48px;padding:0 20px;border-radius:var(--radius-sm);
    background:#fff;color:#3c4043;font-size:15px;font-weight:600;
    box-shadow:0 1px 4px rgba(0,0,0,.25),inset 0 0 0 1px rgba(0,0,0,.08);
    transition:box-shadow .18s ease,transform .12s ease;
    cursor:pointer;border:none;font-family:inherit;
  }
  .btn-google:hover{box-shadow:0 3px 12px rgba(0,0,0,.22),inset 0 0 0 1px rgba(0,0,0,.12);transform:translateY(-1px)}
  .btn-google:active{transform:translateY(0)}
  .btn-google .g-logo{width:20px;height:20px;flex-shrink:0}

  /* Or divider */
  .or-divider{
    display:flex;align-items:center;gap:12px;margin:16px 0;color:var(--text-faint);
    font-size:13px;font-weight:500;
  }
  .or-divider::before,.or-divider::after{
    content:'';flex:1;height:1px;background:var(--border);
  }

  /* =========================================================
     FOOTER
     ========================================================= */
  .site-footer{margin-top:clamp(30px,5vw,56px);border-top:1px solid var(--border);padding:clamp(28px,4vw,44px) 0}
  .footer-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
  .footer-note{color:var(--text-muted);font-size:14px;max-width:42ch}
  .footer-note b{color:var(--text)}
  .footer-tags{display:flex;gap:10px;flex-wrap:wrap}
  .copyright{margin-top:18px;font-size:13px;color:var(--text-faint)}

  /* =========================================================
     RESPONSIVE
     ========================================================= */
  @media (max-width:860px){
    .hero-inner{grid-template-columns:1fr;text-align:center}
    .hero p.lead{margin-inline:auto}
    .hero-cta,.hero-stats{justify-content:center}
    .hero-art{order:-1;min-height:230px}
    .board-wrap{grid-template-columns:1fr}
    .logo-text span{display:none}
  }
  @media (max-width:560px){
    :root{--header-h:64px}
    .theme-switch button{padding:0 10px;font-size:11.5px}
    .game-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:13px}
    .card-thumb{font-size:42px}
    .card-title{font-size:15px}
    .hero-stats{gap:18px}
    .btn-lg{width:100%}
    .hero-cta{flex-direction:column;align-items:stretch}
    .hero-cta .btn{width:100%}
    .logo-text b{font-size:16px}
  }



  /* =========================================================
     MEMORY MATCH GAME STYLES
     ========================================================= */
  .game-container {
    max-width: 600px;
    margin: var(--sp-4) auto;
    padding: var(--sp-4);
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow), inset 0 0 0 1px var(--border);
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  .game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--sp-4);
    flex-wrap: wrap;
    gap: 12px;
  }
  .game-stats {
    display: flex;
    gap: 12px;
    align-items: center;
  }
  .game-stat-box {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    min-width: 90px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 15px;
    box-shadow: var(--shadow-sm);
  }
  .game-stat-box .label {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 2px;
    letter-spacing: 0.5px;
  }
  .memory-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin: 0 auto var(--sp-4) auto;
    aspect-ratio: 1;
    max-width: 440px;
    width: 100%;
  }
  .memory-card {
    perspective: 1000px;
    aspect-ratio: 1;
    cursor: pointer;
  }
  .memory-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transform-style: preserve-3d;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--border);
  }
  .memory-card.flipped .memory-card-inner {
    transform: rotateY(180deg);
  }
  .memory-card.matched {
    cursor: default;
  }
  .memory-card.matched .memory-card-inner {
    transform: rotateY(180deg);
    box-shadow: 0 0 15px var(--success), inset 0 0 0 2px var(--success);
    animation: match-pulse 0.4s ease-in-out;
  }
  @keyframes match-pulse {
    0% { transform: rotateY(180deg) scale(1); }
    50% { transform: rotateY(180deg) scale(1.08); }
    100% { transform: rotateY(180deg) scale(1); }
  }
  .card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .card-back {
    background: radial-gradient(circle, var(--surface-3) 0%, var(--surface-2) 100%);
    border: 2px solid var(--border-strong);
    color: var(--accent);
    font-size: 32px;
    font-weight: 800;
    overflow: hidden;
  }
  .card-back-icon {
    display: inline-block;
    text-shadow: 0 0 8px color-mix(in srgb, var(--accent) 40%, transparent);
    animation: pulse 2s infinite ease-in-out;
  }
  .card-front {
    background: radial-gradient(circle, var(--surface-2) 0%, var(--surface-3) 100%);
    border: 2px solid var(--border-strong);
    transform: rotateY(180deg);
    font-size: clamp(24px, 5vw, 42px);
    overflow: hidden;
  }
  .card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
    pointer-events: none;
  }
  .memory-card.matched .card-front {
    border-color: var(--success);
    background: radial-gradient(circle, var(--surface-3) 0%, rgba(52, 211, 153, 0.15) 100%);
  }
  /* Win Modal & HUD */
  .game-win-modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(5, 8, 18, 0.85);
    backdrop-filter: blur(8px);
  }
  .game-win-modal.open {
    display: flex;
    animation: fade .2s ease;
  }
  .game-win-content {
    width: 100%;
    max-width: 440px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg), inset 0 0 0 1px var(--border-strong);
    padding: var(--sp-4);
    text-align: center;
    position: relative;
    animation: pop .26s cubic-bezier(.2,.9,.3,1.4);
  }
  .win-emoji {
    font-size: 64px;
    margin-bottom: var(--sp-2);
    display: block;
    animation: floaty 3s ease-in-out infinite;
  }
  .win-stats-list {
    margin: var(--sp-3) 0;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--sp-3);
  }
  .win-stat-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
  }
  .win-stat-row:last-child {
    border-bottom: none;
  }
  .win-stat-row span:first-child {
    color: var(--text-muted);
  }
  .win-stat-row span:last-child {
    font-weight: 700;
    color: var(--text);
  }
  .win-stat-row.score-row span:last-child {
    color: var(--brand);
    font-size: 18px;
    font-family: var(--font-display);
  }

  @media (max-width: 480px) {
    .memory-board {
      gap: 8px;
    }
    .memory-card-inner {
      border-radius: var(--radius-sm);
    }
    .card-front, .card-back {
      border-radius: var(--radius-sm);
    }
    .card-back {
      font-size: 24px;
    }
  }