:root {
  --bg: #2a1810;
  --street: #4a4040;
  --ink: #fff8e7;
  --muted: #b8a896;
  --accent: #ff6b35;
  --green: #4caf50;
  --red: #f44336;
  --card: rgba(42, 24, 16, 0.92);
  --hole-shadow: rgba(0, 0, 0, 0.8);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  width: 100%; height: 100%; overflow: hidden;
  background: var(--bg); color: var(--ink);
  font-family: "Segoe UI", "Avenir Next", Futura, system-ui, sans-serif;
  user-select: none; touch-action: none;
}

#game { 
  display: block; width: 100%; height: 100%; 
  cursor: none; 
  background: 
    radial-gradient(circle at 30% 70%, var(--street) 0%, var(--bg) 40%),
    var(--bg);
}

#hud { position: fixed; inset: 0; pointer-events: none; z-index: 2; }

#hud-left { position: absolute; top: 18px; left: 20px; }
#brand { 
  font-weight: 900; letter-spacing: 0.32em; font-size: 14px; 
  color: var(--accent); text-shadow: 0 2px 8px rgba(255, 107, 53, 0.4);
}
#score { 
  margin-top: 6px; font-size: 18px; font-variant-numeric: tabular-nums;
  font-weight: 700; color: var(--green);
}

#hud-center { 
  position: absolute; top: 18px; left: 50%; transform: translateX(-50%); 
  text-align: center; 
}
#clock { 
  font-weight: 800; letter-spacing: 0.12em; font-size: 22px; 
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.7); 
}
#toast { 
  min-height: 1.2em; font-weight: 700; text-shadow: 0 2px 12px rgba(0, 0, 0, 0.7); 
  color: var(--accent); font-size: 14px; margin-top: 4px;
}

#board {
  position: absolute; top: 16px; right: 16px; width: 220px;
  padding: 14px 16px 12px; background: var(--card);
  border: 1px solid rgba(255, 107, 53, 0.3); border-radius: 12px;
  backdrop-filter: blur(8px);
}
.board-title { 
  font-size: 10px; letter-spacing: 0.28em; color: var(--muted); 
  margin-bottom: 10px; text-transform: uppercase; font-weight: 600;
}
#board-list { 
  list-style: none; font-size: 13px; font-variant-numeric: tabular-nums;
}
#board-list li { 
  display: flex; justify-content: space-between; align-items: center; 
  gap: 8px; padding: 4px 0; 
}
#board-list .you { font-weight: 700; color: var(--accent); }
#board-list .dead { opacity: 0.4; text-decoration: line-through; }
.size-indicator { 
  font-size: 11px; color: var(--muted); font-weight: 500; 
}

#splash, #over {
  position: fixed; inset: 0; z-index: 5; display: grid; place-items: center;
  background:
    radial-gradient(800px 600px at 20% 30%, rgba(255, 107, 53, 0.15), transparent 60%),
    radial-gradient(600px 400px at 80% 70%, rgba(76, 175, 80, 0.1), transparent 50%),
    var(--bg);
}
#splash.hidden, #over.hidden { display: none; }

.splash-card {
  width: min(440px, 90vw); padding: 40px 36px 32px; background: var(--card);
  border: 1px solid rgba(255, 107, 53, 0.4); border-radius: 20px; 
  text-align: center; pointer-events: auto;
  backdrop-filter: blur(12px);
}
.kicker { 
  letter-spacing: 0.36em; font-size: 11px; color: var(--accent); 
  margin-bottom: 12px; font-weight: 600; text-transform: uppercase;
}
h1 { 
  font-size: 48px; letter-spacing: 0.16em; line-height: 1; 
  margin-bottom: 12px; font-weight: 900;
  text-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
}
.tag { 
  color: var(--muted); margin-bottom: 24px; font-size: 15px; 
  line-height: 1.4; font-weight: 500;
}

label { 
  display: block; text-align: left; font-size: 11px; 
  letter-spacing: 0.18em; color: var(--muted); text-transform: uppercase; 
  font-weight: 600; margin-bottom: 6px;
}
input {
  width: 100%; margin-bottom: 20px; padding: 14px 16px; border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.15); 
  background: rgba(0, 0, 0, 0.4);
  color: white; font-size: 16px; outline: none;
  transition: border-color 0.3s ease;
}
input:focus {
  border-color: var(--accent);
}
button {
  width: 100%; padding: 16px; border: 0; border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), #ff8f5a);
  color: var(--bg); font-weight: 900; letter-spacing: 0.24em; 
  cursor: pointer; font-size: 15px; text-transform: uppercase;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
}
button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}
.fine { 
  margin-top: 16px; font-size: 11px; color: var(--muted); 
  opacity: 0.8; font-weight: 500;
}