@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

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

:root {
  --bg: #0a0c10;
  --bg2: #0f1117;
  --surface: #13161e;
  --surface2: #1a1e28;
  --border: #1f2433;
  --border-bright: #2a3044;
  --text: #e8eaf0;
  --text-2: #8a8fa8;
  --text-3: #4a4f63;
  --blue: #3b82f6;
  --blue-dim: #1d4ed8;
  --blue-bright: #60a5fa;
  --blue-glow: rgba(59,130,246,0.15);
  --blue-border: rgba(59,130,246,0.3);
  --green: #22c55e;
  --green-dim: rgba(34,197,94,0.12);
  --red: #ef4444;
  --red-dim: rgba(239,68,68,0.12);
  --amber: #f59e0b;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-blue: 0 0 24px rgba(59,130,246,0.15);
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Syne', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== NAV ===== */
.site-nav {
  background: rgba(10,12,16,0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 800;
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo .logo-64 {
  background: var(--blue);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.15s, background 0.15s;
}

.nav-links a:hover { color: var(--text); background: var(--surface2); }
.nav-links a.active { color: var(--blue-bright); background: var(--blue-glow); }

main { flex: 1; }

/* ===== GAME PAGE ===== */
.game-page {
  max-width: 860px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.game-page-header { margin-bottom: 1.5rem; }

.game-page-header h1 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.3rem;
}

.game-page-header p { color: var(--text-2); font-size: 0.9rem; }

.game-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

/* ===== HUD ===== */
.game-hud {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.hud-stat {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.8rem;
}

.hud-stat .label {
  color: var(--text-3);
  font-size: 0.62rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
}

.hud-stat .value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
}

.hud-spacer { flex: 1; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  font-family: 'Syne', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
  text-decoration: none;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}

.btn-primary:hover { background: var(--blue-dim); border-color: var(--blue-bright); box-shadow: var(--shadow-blue); }

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border-color: var(--border-bright);
}

.btn-ghost:hover { background: var(--surface2); color: var(--text); }

/* ===== CANVAS ===== */
canvas {
  display: block;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

/* ===== STATUS ===== */
.game-status {
  margin-top: 1rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  display: none;
  align-items: center;
  gap: 0.5rem;
}

.game-status.win  { display: flex; background: var(--green-dim); color: var(--green); border: 1px solid rgba(34,197,94,0.25); }
.game-status.lose { display: flex; background: var(--red-dim); color: var(--red); border: 1px solid rgba(239,68,68,0.25); }
.game-status.info { display: flex; background: var(--blue-glow); color: var(--blue-bright); border: 1px solid var(--blue-border); }

/* ===== CONTROLS HINT ===== */
.controls-hint {
  margin-top: 1rem;
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.key-hint {
  background: var(--surface2);
  border: 1px solid var(--border-bright);
  border-radius: 5px;
  padding: 0.22rem 0.55rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--text-2);
}

/* ===== FOOTER ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-3);
}