*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0a0a0a; --surface: #111; --border: #1e1e1e; --border2: #2a2a2a;
  --text: #e8e4dc; --muted: #555; --dim: #333; --accent: #c8ff00;
  --mono: 'Space Mono', monospace; --display: 'Unbounded', sans-serif;
}
body { background: var(--bg); color: var(--text); font-family: var(--mono); min-height: 100vh; display: flex; flex-direction: column; }
a {color: #fff; text-decoration: none;}
header {
  border-bottom: 1px solid var(--border);
  padding: 18px 28px; display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; background: var(--bg); z-index: 10;
}
.logo { font-family: var(--display); font-weight: 300; font-size: 13px; letter-spacing: .15em; text-transform: uppercase; }
.logo b { color: var(--accent); font-weight: 600; }
.meta { font-size: 11px; color: var(--muted); letter-spacing: .05em; display: flex; align-items: center; gap: 16px; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px #c8ff00aa; display: inline-block; margin-right: 6px; animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }

main { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 40px 24px; gap: 32px; }

/* ── Lobby ── */
#lobby { display: flex; flex-direction: column; align-items: center; gap: 28px; text-align: center; }
.big-title { font-family: var(--display); font-weight: 300; font-size: clamp(28px, 6vw, 52px); letter-spacing: .08em; line-height: 1.1; }
.big-title b { color: var(--accent); font-weight: 600; }
.sub { font-size: 11px; color: var(--muted); letter-spacing: .12em; line-height: 1.9; }
.start-btn {
  background: var(--accent); color: var(--bg);
  border: none; padding: 14px 40px;
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  letter-spacing: .2em; text-transform: uppercase;
  cursor: pointer; transition: opacity .15s, transform .1s;
}
.start-btn:hover { opacity: .85; }
.start-btn:active { transform: scale(.97); }
.start-btn:disabled { opacity: .3; cursor: not-allowed; }

/* ── Waiting ── */
#waiting { display: none; flex-direction: column; align-items: center; gap: 24px; text-align: center; }
.spinner {
  width: 48px; height: 48px; border: 2px solid var(--border2);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.wait-label { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
.wait-time { font-size: 28px; font-family: var(--display); font-weight: 300; color: var(--accent); }
.cancel-btn {
  background: none; border: 1px solid var(--border2); color: var(--muted);
  padding: 8px 20px; font-family: var(--mono); font-size: 10px;
  letter-spacing: .15em; text-transform: uppercase; cursor: pointer;
  transition: border-color .2s, color .2s;
}
.cancel-btn:hover { border-color: var(--text); color: var(--text); }

/* ── Room ── */
#room { display: none; flex-direction: column; align-items: center; gap: 28px; width: 100%; max-width: 800px; }
.room-header { width: 100%; display: flex; justify-content: space-between; align-items: center; }
.room-id { font-size: 10px; color: var(--muted); letter-spacing: .1em; }
.partner-status { font-size: 10px; letter-spacing: .08em; display: flex; align-items: center; gap: 6px; }
.partner-dot { width: 6px; height: 6px; border-radius: 50%; }
.partner-dot.online { background: var(--accent); box-shadow: 0 0 6px #c8ff00aa; }
.partner-dot.offline { background: var(--muted); }

.panel { width: 100%; }
.label { font-size: 10px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }

/* Image area — split view */
.images-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; width: 100%; }
@media (max-width: 600px) { .images-grid { grid-template-columns: 1fr; } }

.img-cell { display: flex; flex-direction: column; gap: 8px; }
.img-cell-label { font-size: 9px; letter-spacing: .2em; text-transform: uppercase; color: var(--dim); }
.image-frame {
  width: 100%; aspect-ratio: 4/3;
  background: var(--surface); border: 1px solid var(--border);  position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.image-frame img { width: 100%; height: 100%; object-fit: contain; }
.image-frame img.flash { animation: flash .5s ease; }
@keyframes flash { 0%{opacity:0} 100%{opacity:1} }
.empty-state { display: flex; flex-direction: column; align-items: center; gap: 10px; color: var(--dim); }
.empty-icon { font-size: 28px; opacity: .35; }
.empty-text { font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.new-badge {
  position: absolute; top: 10px; right: 10px;
  background: var(--accent); color: var(--bg);
  font-size: 9px; font-weight: 700; letter-spacing: .15em; padding: 2px 7px;
  pointer-events: none; animation: fadeBadge 3s forwards;
}
@keyframes fadeBadge { 0%,60%{opacity:1} 100%{opacity:0} }
.img-meta { font-size: 9px; color: var(--dim); letter-spacing: .06em; }

/* Upload zone */
.upload-zone {
  border: 1px dashed var(--border2); padding: 24px;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  cursor: pointer; transition: border-color .2s, background .2s;
  position: relative;
}
.upload-zone:hover, .upload-zone.drag { border-color: var(--accent); background: #c8ff0008; }
.upload-zone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.upload-hint { font-size: 10px; color: var(--muted); letter-spacing: .1em; text-align: center; line-height: 1.9; }
.upload-btn {
  background: var(--accent); color: var(--bg); border: none;
  padding: 10px 28px; font-family: var(--mono); font-size: 11px; font-weight: 700;
  letter-spacing: .15em; text-transform: uppercase; cursor: pointer;
  transition: opacity .15s;
}
.upload-btn:hover { opacity: .85; }
.upload-btn:disabled { opacity: .3; cursor: not-allowed; }

.leave-btn {
  background: none; border: 1px solid var(--border2); color: var(--muted);
  padding: 8px 20px; font-family: var(--mono); font-size: 10px;
  letter-spacing: .15em; text-transform: uppercase; cursor: pointer;
  transition: border-color .2s, color .2s;
}
.leave-btn:hover { border-color: #ff4444; color: #ff4444; }

/* Toast */
#toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: var(--bg);
  font-size: 11px; font-weight: 700; letter-spacing: .1em; padding: 10px 24px;
  opacity: 0; transition: opacity .3s; pointer-events: none; z-index: 100;
  white-space: nowrap;
}
#toast.show { opacity: 1; }