:root {
  --bg: #070b14;
  --panel: #0e1626;
  --border: #1d2b45;
  --text: #cfe3ff;
  --muted: #6f86a8;
  --neon: #00f0ff;
  --green: #39ff88;
  --red: #ff3b6b;
  --yellow: #ffd23f;
  --violet: #b46bff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 1.5rem 1rem;
  background: var(--bg);
  color: var(--text);
  font-family: "Consolas", "Courier New", monospace;
}

#game {
  max-width: 960px;
  margin: 0 auto;
}

.top h1 {
  margin: 0;
  font-size: 2rem;
  letter-spacing: 0.2em;
  color: var(--neon);
  text-shadow: 0 0 10px var(--neon);
}

.top h1 span {
  color: var(--violet);
  text-shadow: 0 0 10px var(--violet);
}

.subtitle {
  margin: 0.4rem 0 1rem;
  color: var(--muted);
}

.hud {
  display: grid;
  grid-template-columns: repeat(3, 1fr) 2fr;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.label {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
}

.value {
  font-size: 1.3rem;
  color: var(--green);
}

.value.has-key {
  color: var(--yellow);
}

.meter {
  height: 12px;
  background: #050810;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--green), var(--yellow), var(--red));
  transition: width 0.25s;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 1rem;
  align-items: start;
}

.board-wrap {
  position: relative;
}

.board {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  padding: 6px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.cell {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1rem, 4vw, 1.8rem);
  background: #0a1220;
  border: 1px solid #13203a;
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
}

.cell.reachable {
  border-color: var(--neon);
  box-shadow: inset 0 0 8px rgba(0, 240, 255, 0.35);
}

.cell.visited {
  background: #0c1a2c;
}

.cell.vuln {
  background: rgba(255, 59, 107, 0.12);
  color: var(--red);
}

.cell.bonus {
  background: rgba(180, 107, 255, 0.12);
}

.cell.server {
  background: rgba(57, 255, 136, 0.1);
}

.cell.server.locked {
  filter: grayscale(0.8);
}

.cell.player {
  background: rgba(0, 240, 255, 0.2);
  color: var(--neon);
  font-weight: bold;
  text-shadow: 0 0 8px var(--neon);
}

.cell.flash {
  animation: flash 0.4s;
}

@keyframes flash {
  0%, 100% { background: rgba(0, 240, 255, 0.2); }
  50% { background: rgba(255, 59, 107, 0.6); }
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 8, 16, 0.85);
  border-radius: 10px;
}

.overlay.hidden {
  display: none;
}

.overlay-box {
  text-align: center;
  padding: 1.5rem;
}

.overlay-box h2 {
  margin: 0 0 0.5rem;
  font-size: 1.6rem;
}

.overlay.win h2 {
  color: var(--green);
}

.overlay.lose h2 {
  color: var(--red);
}

button {
  font: inherit;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--neon);
  border-radius: 6px;
  padding: 0.5rem 1rem;
  cursor: pointer;
}

button:hover {
  background: #13233b;
}

.pad {
  display: grid;
  grid-template-columns: repeat(3, 52px);
  grid-template-rows: repeat(2, 52px);
  gap: 4px;
  justify-content: center;
  margin-bottom: 0.75rem;
}

.pad-btn {
  padding: 0;
  font-size: 1.2rem;
}

.pad-btn[data-dir="up"] { grid-column: 2; grid-row: 1; }
.pad-btn[data-dir="left"] { grid-column: 1; grid-row: 2; }
.pad-btn[data-dir="down"] { grid-column: 2; grid-row: 2; }
.pad-btn[data-dir="right"] { grid-column: 3; grid-row: 2; }

.restart {
  width: 100%;
  border-color: var(--violet);
}

.legend {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0.5rem;
  font-size: 0.85rem;
}

.legend li {
  margin-bottom: 0.3rem;
}

.cell-icon {
  display: inline-block;
  width: 1.6em;
  text-align: center;
}

.cell-icon.player { color: var(--neon); }
.cell-icon.vuln { color: var(--red); }

.rules {
  font-size: 0.8rem;
  color: var(--muted);
}

.log-wrap h3 {
  margin: 0.5rem 0;
  font-size: 0.9rem;
  color: var(--neon);
}

.log {
  list-style: none;
  padding: 0.5rem;
  margin: 0;
  height: 150px;
  overflow-y: auto;
  background: #050810;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.8rem;
}

.log li {
  margin-bottom: 0.25rem;
}

.log .good { color: var(--green); }
.log .bad { color: var(--red); }
.log .info { color: var(--muted); }
.log .warn { color: var(--yellow); }

@media (max-width: 720px) {
  .hud {
    grid-template-columns: repeat(3, 1fr);
  }

  .stat-wide {
    grid-column: 1 / -1;
  }

  .layout {
    grid-template-columns: 1fr;
  }
}