/* ============================================================
   Gobble Run 3D — style.css
   ============================================================ */
:root{
  --bg-0:#070c20;
  --bg-1:#101a3a;
  --bg-2:#172551;
  --pink:#ff4fa3;
  --pink-2:#ff7ad9;
  --gold:#ffd84d;
  --cyan:#5cd8ff;
  --green:#7ee07a;
  --ink:#06091c;
  --txt:#eef4ff;
  --muted:#a8bbe6;
  --card:#132149;
  --card-2:#1b2c63;
  --ring: rgba(92,216,255,.5);
  --shadow: 0 10px 40px rgba(0,0,0,.5);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #1b2c6e 0%, var(--bg-1) 45%, var(--bg-0) 100%);
  color: var(--txt);
  min-height:100vh;
  -webkit-font-smoothing: antialiased;
}

a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}

.wrap{max-width:1040px;margin:0 auto;padding:14px 16px 60px}

/* ---------- Top bar ---------- */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:6px 2px 12px;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:10px}
.brand .logo{
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,var(--cyan),var(--gold));
  display:flex;align-items:center;justify-content:center;font-size:24px;
  box-shadow:var(--shadow);
}
.brand h1{font-size:1.22rem;margin:0;letter-spacing:.2px}
.brand small{display:block;color:var(--muted);font-weight:500;font-size:.72rem}
.topbar .back{font-size:.85rem;color:var(--cyan);font-weight:700}

/* ---------- Ad slots ---------- */
.ad-slot{
  margin:10px auto;display:flex;align-items:center;justify-content:center;
  color:#5d70a8;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  background:repeating-linear-gradient(45deg,#0e1838,#0e1838 10px,#122046 10px,#122046 20px);
  border:1px dashed #2b3d7a;border-radius:10px;overflow:hidden;
}
.ad-leaderboard{width:100%;max-width:728px;min-height:90px}
.ad-rectangle{width:100%;max-width:336px;min-height:280px}

/* ---------- Game stage ---------- */
.stage{
  position:relative;width:100%;
  border-radius:18px;overflow:hidden;
  background:#0d1733;
  box-shadow:var(--shadow), inset 0 0 0 1px rgba(255,255,255,.05);
}
.canvas-wrap{
  position:relative;width:100%;
  height: min(64vh, 620px);
  min-height:380px;
}
.canvas-wrap canvas{display:block;width:100%;height:100%;touch-action:none}

/* ---------- HUD ---------- */
.hud{
  position:absolute;inset:0;pointer-events:none;
  display:flex;flex-direction:column;justify-content:space-between;
  padding:12px;
}
.hud-row{display:flex;gap:8px;flex-wrap:wrap}
.hud-row.bottom{justify-content:center}
.chip{
  background:rgba(6,9,28,.62);backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,.08);border-radius:12px;
  padding:6px 12px;min-width:64px;text-align:center;
  box-shadow:0 4px 14px rgba(0,0,0,.3);
}
.chip .lbl{display:block;font-size:.6rem;letter-spacing:.1em;color:var(--muted);text-transform:uppercase}
.chip .val{display:block;font-size:1.15rem;font-weight:800;line-height:1.1}
.chip.dist .val{color:var(--cyan)}
.chip.score .val{color:#fff}
.chip.stage .val{font-size:.92rem;color:var(--gold)}
#comboWrap{transition:transform .15s ease, opacity .2s;opacity:.55}
#comboWrap.active{opacity:1;transform:scale(1.08);border-color:var(--pink)}
#comboWrap.active .val{color:var(--pink-2)}

/* float text */
.floatText{
  position:absolute;transform:translate(-50%,-50%);
  font-weight:900;font-size:1.5rem;pointer-events:none;
  text-shadow:0 2px 8px rgba(0,0,0,.6);
  animation:floatUp .9s ease-out forwards;white-space:nowrap;z-index:5;
}
@keyframes floatUp{
  0%{opacity:0;transform:translate(-50%,-30%) scale(.6)}
  20%{opacity:1;transform:translate(-50%,-60%) scale(1.1)}
  100%{opacity:0;transform:translate(-50%,-160%) scale(1)}
}

/* ---------- Overlays ---------- */
.overlay{
  position:absolute;inset:0;display:none;
  align-items:center;justify-content:center;text-align:center;
  background:radial-gradient(800px 500px at 50% 30%, rgba(27,44,99,.86), rgba(6,9,28,.94));
  backdrop-filter:blur(3px);padding:18px;z-index:10;
}
.overlay.show{display:flex;animation:fadeIn .25s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.panel{
  max-width:460px;width:100%;
  background:linear-gradient(180deg,var(--card-2),var(--card));
  border:1px solid rgba(255,255,255,.1);border-radius:18px;
  padding:24px 22px;box-shadow:var(--shadow);
}
.panel h2{margin:.1em 0 .2em;font-size:1.6rem}
.panel h2 .em{background:linear-gradient(90deg,var(--cyan),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.panel p{color:var(--muted);margin:.4em 0;font-size:.92rem;line-height:1.5}
.howto{
  text-align:left;background:rgba(6,9,28,.4);border-radius:12px;
  padding:12px 14px;margin:14px 0;font-size:.86rem;color:var(--txt)
}
.howto li{margin:5px 0}
.howto b{color:var(--gold)}
.keycap{display:inline-block;background:#06091c;border:1px solid #2b3d7a;border-bottom-width:3px;
  border-radius:6px;padding:1px 7px;font-size:.78rem;font-weight:700;margin:0 1px}

.btn{
  cursor:pointer;border:none;border-radius:14px;
  padding:13px 26px;font-size:1.05rem;font-weight:800;color:#0a1226;
  background:linear-gradient(135deg,var(--gold),var(--cyan));
  box-shadow:0 8px 22px rgba(92,216,255,.4);
  transition:transform .12s ease, box-shadow .12s ease;
  pointer-events:auto;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(92,216,255,.5)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:transparent;color:var(--txt);border:1px solid #2b3d7a;box-shadow:none;font-size:.9rem;padding:10px 18px}

.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0}
.stat-grid .s{background:rgba(6,9,28,.5);border-radius:12px;padding:10px}
.stat-grid .s .l{font-size:.66rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.stat-grid .s .v{font-size:1.3rem;font-weight:800}
.newbest{display:none;color:var(--gold);font-weight:800;margin:6px 0;animation:pulse 1s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.06)}}
.hs-line{font-size:.85rem;color:var(--muted)}
.hs-line b{color:var(--cyan)}

/* load error */
.load-error{
  position:absolute;inset:0;display:none;align-items:center;justify-content:center;
  text-align:center;background:#0d1733;color:var(--txt);padding:20px;z-index:30;flex-direction:column;
}

/* ---------- Content copy ---------- */
.content{margin-top:26px;line-height:1.65;color:#d3ddf5}
.content h2{color:#fff;margin-top:1.4em;font-size:1.35rem}
.content h3{color:var(--cyan);margin-top:1.1em;font-size:1.06rem}
.content ul{padding-left:1.1em}
.content li{margin:.35em 0}
.content .cta-row{margin:22px 0 8px;display:flex;gap:12px;flex-wrap:wrap}
.content .cta-row a{
  display:inline-block;background:var(--card-2);border:1px solid #2b3d7a;
  border-radius:12px;padding:11px 18px;color:#fff;font-weight:700
}
.content .cta-row a:hover{border-color:var(--cyan);text-decoration:none}

.foot{margin-top:34px;padding-top:18px;border-top:1px solid #1f2e5e;color:var(--muted);font-size:.82rem;text-align:center}

@media (max-width:560px){
  .brand h1{font-size:1.05rem}
  .canvas-wrap{height:min(58vh,520px);min-height:340px}
  .chip{min-width:54px;padding:5px 9px}
  .chip .val{font-size:1rem}
  .panel h2{font-size:1.35rem}
  .floatText{font-size:1.2rem}
}