:root {
  --bg-night: #07121d;
  --bg-dusk: #2a1f3b;
  --bg-sunset: #60344a;
  --panel: rgba(18, 15, 28, 0.78);
  --line: rgba(255, 170, 106, 0.28);
  --text: #fff3e7;
  --muted: #e1c0ad;
  --accent-gold: #ffd95d;
  --accent-orange: #ff9350;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Rajdhani", sans-serif;
  color: var(--text);
  min-height: 100vh;
  background:
    radial-gradient(circle at 82% 12%, rgba(123, 218, 255, 0.18), transparent 24%),
    radial-gradient(circle at 68% 24%, rgba(255, 147, 80, 0.24), transparent 34%),
    radial-gradient(circle at 18% 8%, rgba(207, 109, 142, 0.2), transparent 36%),
    linear-gradient(140deg, var(--bg-night), var(--bg-dusk) 54%, var(--bg-sunset));
  overflow-x: hidden;
}

.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255, 170, 106, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 170, 106, 0.06) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.72), transparent 78%);
}

.mine-shell {
  width: min(1240px, 94vw);
  margin: 20px auto 34px;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 2.2fr) minmax(280px, 1fr);
  position: relative;
  z-index: 1;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(9px);
}

.top-panel,
.stats-panel {
  grid-column: 1 / -1;
}

.top-panel {
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.kicker {
  margin: 0;
  color: #b8eeff;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  font-size: 0.76rem;
  font-weight: 700;
}

h1,
h2 {
  margin: 0;
  font-family: "Orbitron", sans-serif;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

h1 {
  margin-top: 5px;
  font-size: clamp(1.4rem, 2.8vw, 2.1rem);
}

.subtitle {
  margin-top: 8px;
  color: var(--muted);
  font-size: 1.05rem;
}

.action-btn,
.mode-btn {
  border: 0;
  border-radius: 999px;
  padding: 10px 18px;
  color: #2b1203;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-gold));
  font-family: "Orbitron", sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.mode-btn {
  width: 100%;
}

.mode-btn.active {
  color: #06263f;
  background: linear-gradient(90deg, #7ad7ff, #baf2ff);
}

.stats-panel {
  padding: 10px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
}

.stat {
  border: 1px solid rgba(255, 190, 126, 0.24);
  border-radius: 11px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.04);
}

.stat span {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #ffd6b2;
  font-weight: 700;
}

.stat strong {
  display: block;
  margin-top: 3px;
  font-size: 1.05rem;
}

.board-panel {
  position: relative;
  padding: 14px;
}

.board-wrap {
  overflow: auto;
  border-radius: 12px;
  border: 1px solid rgba(255, 190, 126, 0.28);
  background: rgba(10, 20, 34, 0.58);
  padding: 10px;
}

.board {
  --cols: 18;
  display: grid;
  grid-template-columns: repeat(var(--cols), 32px);
  grid-auto-rows: 32px;
  gap: 5px;
  width: max-content;
}

.tile {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
  color: #ffeede;
  font-family: "Orbitron", sans-serif;
  font-size: 0.86rem;
  font-weight: 700;
  display: grid;
  place-items: center;
  cursor: pointer;
  user-select: none;
}

.tile.revealed {
  background: rgba(255, 255, 255, 0.06);
  cursor: default;
}

.tile.mine {
  background: #ff677a;
  color: #3f0e18;
}

.tile.flagged {
  background: rgba(255, 211, 107, 0.28);
  color: #fff0be;
}

.n-1 { color: #8ce7ff; }
.n-2 { color: #8dffa0; }
.n-3 { color: #ffd37a; }
.n-4 { color: #ffb07a; }
.n-5 { color: #ff8696; }
.n-6 { color: #d19bff; }
.n-7 { color: #f4f4f4; }
.n-8 { color: #a6b6c7; }

.overlay {
  position: absolute;
  inset: 14px;
  border-radius: 12px;
  display: none;
  place-items: center;
  text-align: center;
  background: rgba(8, 14, 24, 0.8);
  color: #fff4e7;
  padding: 20px;
}

.overlay.show {
  display: grid;
}

.overlay h2 {
  font-size: clamp(1.2rem, 2.8vw, 1.9rem);
  color: #b8f4ff;
}

.overlay p {
  margin-top: 8px;
}

.side-panel {
  padding: 15px;
  display: grid;
  gap: 14px;
  align-content: start;
}

.side-copy {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
}

@media (max-width: 1020px) {
  .mine-shell {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .top-panel {
    flex-direction: column;
    align-items: flex-start;
  }

  .stats-panel {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .board {
    grid-template-columns: repeat(var(--cols), 28px);
    grid-auto-rows: 28px;
    gap: 4px;
  }
}