:root {
  --bg-top: #1b2b1a;
  --bg-bottom: #0d140c;
  --panel: rgba(10, 18, 9, 0.85);
  --line: rgba(193, 237, 175, 0.14);
  --text: #f5fff1;
  --soft: #b5cfaf;
  --mint: #94ff7d;
  --gold: #ffd577;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, rgba(131, 199, 116, 0.16), transparent 34%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

.layout {
  display: grid;
  grid-template-columns: minmax(260px, 310px) minmax(0, 1fr);
  gap: 20px;
  padding: 20px;
  min-height: 100vh;
  align-items: start;
}

.sidebar,
.main {
  border-radius: 24px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.3);
}

.sidebar {
  padding: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--gold);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  font-size: 2.3rem;
  margin-bottom: 12px;
}

.intro,
.card p {
  color: var(--soft);
  line-height: 1.55;
}

.card {
  margin-top: 18px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.back-link {
  display: inline-block;
  margin-top: 18px;
  color: var(--mint);
  font-weight: 700;
  text-decoration: none;
}

.main {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.hud {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.hud > div {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hud span {
  display: block;
  margin-bottom: 6px;
  font-size: 0.82rem;
  color: var(--soft);
}

.game-wrap {
  position: relative;
  width: min(100%, 1100px);
  min-width: min(100%, 320px);
  margin: 0 auto;
}

#world {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  display: block;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #7bc7ff;
}

.overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(3, 6, 4, 0.6);
  border-radius: 24px;
}

.overlay.visible {
  display: flex;
}

.overlay-card {
  width: min(540px, 100%);
  padding: 24px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(15, 24, 13, 0.98), rgba(8, 12, 7, 0.98));
  border: 1px solid rgba(148, 255, 125, 0.18);
}

.tag {
  color: var(--gold);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.overlay-card p {
  color: var(--soft);
  line-height: 1.55;
}

.actions {
  margin-top: 16px;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  color: #0b170a;
  background: linear-gradient(90deg, var(--mint), #edffd8);
}

.crosshair {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 18px;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.crosshair::before,
.crosshair::after {
  content: "";
  position: absolute;
  background: rgba(255, 255, 255, 0.9);
}

.crosshair::before {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

.crosshair::after {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.hotbar {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}

.slot {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  color: var(--text);
  background: rgba(20, 26, 17, 0.88);
  border: 2px solid rgba(255, 255, 255, 0.12);
}

.slot.active {
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(255, 213, 119, 0.18);
}

@media (max-width: 1280px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .hud {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .layout {
    padding: 12px;
    gap: 12px;
  }

  .sidebar,
  .main,
  #world,
  .overlay,
  .overlay-card {
    border-radius: 18px;
  }
}