* { box-sizing: border-box; }
:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-2: #334155;
  --border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --danger: #ef4444;
  --free: #1e293b;
  --busy: #7c3aed;
  --busy-hover: #6d28d9;
  --paulo: #06b6d4;
  --marcos: #f59e0b;
}
html, body { margin: 0; padding: 0; height: 100%; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; border-bottom: 1px solid var(--border);
  background: var(--panel); flex-wrap: wrap; gap: 12px;
  position: sticky; top: 0; z-index: 10;
}
.brand h1 { margin: 0; font-size: 18px; font-weight: 600; }
.brand .sub { color: var(--muted); font-size: 12px; }
.controls { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.week-label { color: var(--muted); font-size: 14px; padding: 0 10px; min-width: 220px; text-align: center; }
.btn {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  padding: 6px 12px; border-radius: 6px; cursor: pointer; font-size: 13px;
}
.btn:hover { background: #475569; }
.btn-ghost { background: transparent; }
.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: #dc2626; }

main { padding: 12px 20px 40px; }
#loading { padding: 40px; text-align: center; color: var(--muted); }

.day-wrap { margin-bottom: 24px; }
.day-title { font-size: 15px; font-weight: 600; margin: 0 0 8px; color: var(--text); }
.day-title .weekend { color: var(--danger); font-size: 12px; margin-left: 8px; }

.grid {
  display: grid;
  grid-template-columns: 90px 1fr 1fr;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.grid-header {
  background: var(--panel);
  padding: 10px 12px;
  font-weight: 600;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.grid-header.paulo { color: var(--paulo); }
.grid-header.marcos { color: var(--marcos); }
.time-label {
  background: var(--panel);
  padding: 8px 12px;
  color: var(--muted);
  font-size: 12px;
  font-family: 'SF Mono', Menlo, monospace;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  text-align: center;
}
.slot {
  padding: 6px 8px;
  min-height: 34px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  cursor: pointer;
  font-size: 12px;
  transition: background 60ms;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.slot:last-child { border-right: none; }
.slot.free { background: var(--free); color: var(--muted); }
.slot.free:hover { background: var(--panel-2); color: var(--text); }
.slot.free:hover::before { content: "+ "; }
.slot.busy { background: var(--busy); color: white; font-weight: 500; }
.slot.busy:hover { background: var(--busy-hover); }
.slot.busy .title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.day-wrap.weekend .grid { opacity: 0.35; }
.day-wrap.weekend .slot { cursor: not-allowed; }

dialog {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 10px;
  padding: 20px;
  max-width: 500px;
  width: 90%;
}
dialog::backdrop { background: rgba(0,0,0,0.6); }
dialog h3 { margin: 0 0 16px; }
dialog h4 { margin: 16px 0 6px; font-size: 13px; color: var(--muted); }
dialog label { display: block; margin-bottom: 12px; font-size: 13px; }
dialog label small { color: var(--muted); font-size: 11px; }
dialog input, dialog textarea {
  width: 100%; padding: 8px 10px; margin-top: 4px;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px;
  font-family: inherit; font-size: 13px;
}
dialog input:read-only { color: var(--muted); background: var(--panel-2); }
dialog textarea { resize: vertical; }
dialog .actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
dialog pre {
  background: var(--bg); padding: 10px; border-radius: 6px;
  border: 1px solid var(--border); overflow-x: auto; font-size: 11px;
  margin: 0;
}
dialog code { font-family: 'SF Mono', Menlo, monospace; font-size: 11px; }
.error { color: var(--danger); font-size: 12px; margin-top: 8px; min-height: 16px; }

@media (max-width: 640px) {
  header { padding: 10px 12px; }
  main { padding: 8px 10px 40px; }
  .grid { grid-template-columns: 60px 1fr 1fr; }
  .time-label { padding: 6px 4px; font-size: 11px; }
  .slot { padding: 5px 6px; font-size: 11px; }
  .grid-header { padding: 8px 4px; font-size: 12px; }
  .week-label { min-width: 140px; font-size: 12px; }
}