:root {
  --bg: #060814;
  --panel: #101635;
  --line: #30406f;
  --text: #e8edff;
  --cyan: #77f3ff;
  --pink: #ff67c8;
  --gold: #ffd36c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  padding: 18px;
  color: var(--text);
  background:
    radial-gradient(circle at 15% -10%, #331f64 0%, transparent 45%),
    radial-gradient(circle at 90% 120%, #113f68 0%, transparent 42%),
    var(--bg);
  font-family: "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
  display: grid;
  place-items: center;
}

.cabinet {
  width: min(1040px, 100%);
  background: linear-gradient(180deg, rgba(13, 20, 53, 0.96), rgba(8, 12, 34, 0.98));
  border: 2px solid #314b80;
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 22px 58px rgba(0, 0, 0, 0.42), inset 0 0 0 1px rgba(119, 243, 255, 0.18);
}

.kicker {
  margin: 0;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 1.4px;
  font-size: 0.78rem;
}

h1 {
  margin: 4px 0 0;
  color: var(--cyan);
  text-shadow: 0 0 16px rgba(119, 243, 255, 0.6);
}

.subtitle {
  margin: 8px 0 0;
  color: #b9c7f4;
}

.hud {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.hud div {
  background: rgba(15, 23, 58, 0.8);
  border: 1px solid rgba(119, 243, 255, 0.22);
  border-radius: 10px;
  padding: 8px 10px;
  text-align: center;
}

.hud span {
  display: block;
  color: #9fb2f6;
  text-transform: uppercase;
  font-size: 0.76rem;
  letter-spacing: 0.6px;
}

.hud strong {
  display: block;
  margin-top: 4px;
  color: var(--cyan);
  font-size: 1.3rem;
}

.layout {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 12px;
}

.panel {
  background: rgba(11, 17, 44, 0.88);
  border: 1px solid rgba(117, 143, 220, 0.35);
  border-radius: 12px;
  padding: 12px;
}

.panel h2 {
  margin: 0 0 8px;
  font-size: 1.08rem;
  color: #ffd8f0;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 9px 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
}

.primary {
  background: linear-gradient(180deg, #73f7ff, #37cde8);
  color: #062030;
}

.ghost {
  background: rgba(19, 29, 63, 0.9);
  border: 1px solid rgba(151, 174, 255, 0.36);
  color: #dbe6ff;
}

.hint {
  margin: 10px 0 0;
  color: #aebeea;
  font-size: 0.88rem;
}

.pack-result {
  margin-top: 10px;
  min-height: 80px;
  border: 1px dashed rgba(255, 214, 107, 0.35);
  border-radius: 10px;
  padding: 10px;
  color: #ffe8bc;
  font-size: 0.9rem;
  line-height: 1.45;
}

.inventory-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.sticker-btn {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(38, 54, 99, 0.88), rgba(25, 35, 72, 0.9));
  color: #eff4ff;
  padding: 8px;
  min-height: 62px;
  text-align: left;
}

.sticker-btn.active {
  outline: 2px solid var(--pink);
  box-shadow: 0 0 0 2px rgba(255, 103, 200, 0.26) inset;
}

.sticker-icon {
  font-size: 1.28rem;
  display: block;
}

.sticker-meta {
  display: block;
  margin-top: 4px;
  font-size: 0.78rem;
  color: #c8d5ff;
}

.album-panel {
  margin-top: 12px;
}

.album-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.album-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
}

.slot {
  aspect-ratio: 1;
  border: 1px dashed rgba(119, 243, 255, 0.3);
  border-radius: 10px;
  background: rgba(12, 20, 50, 0.75);
  display: grid;
  place-items: center;
  cursor: pointer;
  font-size: 1.5rem;
  color: #8fa5e7;
  position: relative;
}

.slot.filled {
  border-style: solid;
}

.slot-label {
  position: absolute;
  bottom: 6px;
  font-size: 0.64rem;
  color: #c4d2fd;
  letter-spacing: 0.4px;
}

.message {
  margin: 10px 0 2px;
  color: #ffd8ed;
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .album-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .hud { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .inventory-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .album-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}