@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --bg: #0b0d0f;
  --felt: #123832;
  --felt-line: #1e5147;
  --paddle-red: #e5484d;
  --paddle-teal: #2ec4b6;
  --ball: #f4f1e8;
  --ink: #edefee;
  --muted: #8a9290;
  --panel: #12161a;
  --panel-line: #23292d;
  --radius: 10px;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;height:100%;}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:'Space Grotesk', sans-serif;
  overflow:hidden;
}

h1,h2,h3,.display{
  font-family:'Bebas Neue', sans-serif;
  letter-spacing:0.03em;
  font-weight:400;
}

.mono{font-family:'IBM Plex Mono', monospace;}

#app{position:relative; width:100vw; height:100vh;}

.screen{
  position:absolute; inset:0;
  display:none;
  flex-direction:column;
  overflow-y:auto;
}
.screen.active{display:flex;}

/* ---------- MAIN MENU ---------- */
#menu-screen{
  align-items:center;
  padding:0;
}

.court-line{
  width:100%;
  height:2px;
  background:repeating-linear-gradient(90deg, var(--felt-line), var(--felt-line) 14px, transparent 14px, transparent 24px);
  flex-shrink:0;
}

.hero{
  width:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:28px 20px 10px;
  flex-shrink:0;
}

#hero-canvas{display:block; width:100%; height:100%;}

.hero-canvas-wrap{
  width:100%;
  max-width:520px;
  height:180px;
  border-radius:var(--radius);
  overflow:hidden;
  background:radial-gradient(ellipse at 50% 30%, #163832, #0b0d0f 75%);
  border:1px solid var(--panel-line);
}

.title-row{
  display:flex; align-items:baseline; gap:14px; margin:14px 0 2px;
}
.title-row h1{font-size:52px; margin:0; color:var(--ink); line-height:1;}
.title-row .accent{color:var(--paddle-red);}
.subtitle{color:var(--muted); font-size:14px; margin:0 0 6px;}

.menu-body{
  width:100%;
  max-width:760px;
  padding:10px 20px 40px;
  display:flex;
  flex-direction:column;
  gap:22px;
}

.panel{
  background:var(--panel);
  border:1px solid var(--panel-line);
  border-radius:var(--radius);
  padding:18px 20px;
}

.panel-label{
  font-size:11px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--muted);
  margin:0 0 12px;
}

/* difficulty scoreboard */
.tier-row{
  display:grid;
  grid-template-columns:repeat(7,1fr);
  gap:6px;
}
.tier-btn{
  background:#181e22;
  border:1px solid var(--panel-line);
  border-radius:6px;
  padding:10px 4px 8px;
  color:var(--ink);
  cursor:pointer;
  text-align:center;
  font-family:'Space Grotesk', sans-serif;
  font-size:11px;
  transition:transform .12s ease, border-color .12s ease;
}
.tier-btn .paddle-dot{
  display:block;
  width:16px;height:16px;
  border-radius:3px;
  margin:0 auto 6px;
}
.tier-btn:hover{transform:translateY(-2px);}
.tier-btn.selected{border-color:var(--paddle-red); box-shadow:0 0 0 1px var(--paddle-red) inset;}

/* mode grid */
.mode-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:12px;
}
.mode-btn{
  background:#181e22;
  border:1px solid var(--panel-line);
  border-radius:8px;
  padding:16px;
  text-align:left;
  color:var(--ink);
  cursor:pointer;
  transition:border-color .12s ease, transform .12s ease;
}
.mode-btn:hover{border-color:var(--paddle-teal); transform:translateY(-2px);}
.mode-btn.selected{border-color:var(--paddle-teal); box-shadow:0 0 0 1px var(--paddle-teal) inset;}
.mode-btn .mode-title{font-family:'Bebas Neue'; font-size:22px; display:block;}
.mode-btn .mode-desc{font-size:12px; color:var(--muted); display:block; margin-top:4px;}

/* points selector */
.points-row{display:flex; gap:8px; flex-wrap:wrap; align-items:center;}
.point-chip{
  background:#181e22; border:1px solid var(--panel-line); border-radius:20px;
  padding:8px 16px; font-family:'IBM Plex Mono'; cursor:pointer; font-size:13px;
}
.point-chip.selected{border-color:var(--paddle-red); color:var(--paddle-red);}
.point-chip.custom-wrap{display:flex; align-items:center; gap:6px;}
.point-chip input{
  width:48px; background:transparent; border:none; color:var(--ink);
  font-family:'IBM Plex Mono'; font-size:13px; text-align:center;
}
.point-chip input:focus{outline:none;}

/* controls preview */
.controls-note{font-size:12px; color:var(--muted); line-height:1.6;}
.controls-note b{color:var(--ink);}

.cta-row{display:flex; gap:12px;}
.btn{
  flex:1;
  border:none;
  border-radius:8px;
  padding:16px;
  font-family:'Bebas Neue';
  font-size:20px;
  letter-spacing:0.04em;
  cursor:pointer;
}
.btn-primary{background:var(--paddle-red); color:#160707;}
.btn-secondary{background:transparent; border:1px solid var(--panel-line); color:var(--ink);}
.btn-primary:hover{filter:brightness(1.1);}
.btn-secondary:hover{border-color:var(--paddle-teal);}

/* ---------- PUBLIC ROUND SCREEN ---------- */
#round-screen .panel{max-width:420px; margin:auto;}
.round-flip{
  background:#0d1113;
  border:1px solid var(--panel-line);
  border-radius:8px;
  padding:18px;
  text-align:center;
  margin:16px 0;
}
.round-code{
  font-family:'IBM Plex Mono';
  font-size:40px;
  letter-spacing:0.18em;
  color:var(--paddle-teal);
}
#qr-box{width:200px; margin:12px auto; display:flex; justify-content:center; background:#fff; padding:8px; border-radius:6px;}
.round-status{color:var(--muted); font-size:13px; text-align:center;}
.center-col{display:flex; flex-direction:column; align-items:center; justify-content:center; height:100%; padding:20px;}

.join-input{
  width:100%;
  background:#0d1113;
  border:1px solid var(--panel-line);
  color:var(--ink);
  font-family:'IBM Plex Mono';
  font-size:22px;
  letter-spacing:0.2em;
  text-align:center;
  padding:14px;
  border-radius:8px;
  text-transform:uppercase;
}
.join-input:focus{outline:none; border-color:var(--paddle-teal);}

/* ---------- GAME SCREEN ---------- */
#game-screen{padding:0;}
#game-canvas-wrap{position:relative; flex:1;}
#game-canvas-wrap canvas{display:block; width:100%; height:100%;}

.hud{
  position:absolute; top:0; left:0; right:0;
  display:flex; justify-content:space-between; align-items:flex-start;
  padding:16px 24px;
  pointer-events:none;
  font-family:'IBM Plex Mono';
}
.hud-score{
  font-size:34px;
  display:flex; gap:6px; align-items:baseline;
}
.hud-score .p-red{color:var(--paddle-red);}
.hud-score .p-teal{color:var(--paddle-teal);}
.hud-score .dash{color:var(--muted); font-size:20px;}
.hud-tier{
  font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:0.1em;
  text-align:right;
}
.hud-exit{
  position:absolute; bottom:16px; right:16px;
  pointer-events:all;
  background:rgba(18,22,26,0.85);
  border:1px solid var(--panel-line);
  color:var(--muted);
  border-radius:6px;
  padding:8px 14px;
  font-size:12px;
  cursor:pointer;
}
.hud-exit:hover{color:var(--ink); border-color:var(--paddle-red);}

.winner-overlay{
  position:absolute; inset:0;
  background:rgba(11,13,15,0.92);
  display:none;
  align-items:center; justify-content:center;
  flex-direction:column;
  gap:18px;
}
.winner-overlay.active{display:flex;}
.winner-overlay h2{font-size:56px; margin:0;}

.touch-hint{
  position:absolute; bottom:16px; left:16px;
  font-size:11px; color:var(--muted);
  pointer-events:none;
}

@media (max-width:600px){
  .tier-row{grid-template-columns:repeat(4,1fr);}
  .mode-grid{grid-template-columns:1fr;}
  .title-row h1{font-size:38px;}
}