:root {
  --bg: #050607;
  --glass: rgba(14,13,10,.72);
  --text: #f4eee0;
  --muted: #9c9588;
  --line: rgba(255,255,255,.095);
  --line-gold: rgba(201,162,61,.28);
  --gold: #c9a23d;
  --gold-2: #ead28b;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

.app {
  min-height: 100svh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #050607 0%, #07090a 52%, #050607 100%);
}

/* ── Layer tabs (شخص / کشور / جهان) ── */
.layer-bar {
  position: sticky;
  top: 46px;
  z-index: 20;
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(5,6,7,.9);
  backdrop-filter: blur(18px);
}

.layer-tab {
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 9px 20px;
  cursor: pointer;
  transition: border-color .2s, background .2s, color .2s;
}

.layer-tab:hover {
  border-color: var(--line-gold);
  color: var(--gold-2);
}

.layer-tab.active {
  border-color: var(--gold);
  background: rgba(201,162,61,.14);
  color: var(--gold-2);
}

.layer-note {
  margin-left: 14px;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: .04em;
}

/* ── Grid of 12 spheres ── */
.grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  padding: 1px;
}

@media (max-width: 1180px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 820px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .grid { grid-template-columns: 1fr; }
}

.cell {
  position: relative;
  background: var(--bg);
  min-height: 260px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.cell canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  touch-action: none;
}

.cell-caption {
  position: relative;
  z-index: 2;
  margin-top: auto;
  padding: 12px 14px;
  background: linear-gradient(0deg, rgba(5,6,7,.86) 0%, rgba(5,6,7,0) 100%);
  pointer-events: none;
}

.cell-name {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--gold-2);
  text-transform: uppercase;
}

.cell-score {
  margin: 4px 0 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--gold-2);
  font-family: "SFMono-Regular", "JetBrains Mono", Consolas, monospace;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 21;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(5,6,7,.96);
  backdrop-filter: blur(18px);
}

.z-brand { display: flex; align-items: center; gap: 9px; }
.z-mark { width: 18px; height: 18px; background: linear-gradient(135deg,#c9a23d,#b47a32); }
.z-os { font-size: .67rem; letter-spacing: .2em; text-transform: uppercase; color: rgba(244,238,224,.45); }
.z-sep { color: rgba(255,255,255,.18); padding: 0 2px; }
.z-app-name { font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; color: #c9a23d; }
.z-back {
  font-size: .64rem; letter-spacing: .1em; text-transform: uppercase;
  color: rgba(244,238,224,.38); text-decoration: none;
  border: 1px solid rgba(255,255,255,.08); padding: 5px 12px;
}
.z-back:hover { color: #c9a23d; border-color: rgba(201,162,61,.32); }