:root {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --text: #1c2130;
  --muted: #6b7385;
  --border: #e3e6ee;
  --accent: #4f46e5;
  --accent-soft: #eef0ff;
  --danger: #dc2626;
  --ok: #16a34a;
  --warn: #d97706;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 1px 3px rgba(16, 24, 40, .06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117; --panel: #171a23; --text: #e7e9ef; --muted: #9098aa;
    --border: #2a2f3c; --accent: #818cf8; --accent-soft: #232646; --shadow: none;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  background: var(--bg); color: var(--text);
}
a { color: var(--accent); }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

/* layout */
.app { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--panel); border-right: 1px solid var(--border); padding: 20px 12px;
  display: flex; flex-direction: column; gap: 4px; position: sticky; top: 0; height: 100vh;
}
.brand { font-weight: 700; font-size: 16px; padding: 0 10px 16px; display: flex; gap: 8px; align-items: center; }
.brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.nav-btn {
  all: unset; cursor: pointer; padding: 9px 12px; border-radius: 8px; color: var(--muted);
  display: flex; justify-content: space-between; align-items: center;
}
.nav-btn:hover { background: var(--bg); color: var(--text); }
.nav-btn.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.nav-btn .badge { background: var(--accent); color: #fff; border-radius: 99px; font-size: 11px; padding: 0 7px; }
.sidebar .spacer { flex: 1; }
main { padding: 28px 32px; max-width: 1180px; width: 100%; }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 16px; }
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.stat .value { font-size: 26px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }

/* forms */
label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 6px; }
.field { margin-bottom: 14px; }
.hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
input, textarea, select {
  width: 100%; font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 9px 11px;
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
textarea { resize: vertical; min-height: 90px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row > .grow { flex: 1; min-width: 160px; }
.days { display: flex; gap: 6px; flex-wrap: wrap; }
.days label { font-weight: 500; display: flex; align-items: center; gap: 4px; margin: 0; border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; cursor: pointer; }
.days input { width: auto; }

.btn {
  font: inherit; font-weight: 600; cursor: pointer; border-radius: 8px; padding: 8px 14px;
  border: 1px solid var(--border); background: var(--panel); color: var(--text); white-space: nowrap;
}
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--danger); }
.btn.sm { padding: 4px 10px; font-size: 12px; }
.btn:disabled { opacity: .55; cursor: default; }

/* tables */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
tr:last-child td { border-bottom: 0; }
.table-wrap { overflow-x: auto; }

.pill { display: inline-block; padding: 1px 9px; border-radius: 99px; font-size: 12px; font-weight: 600; background: var(--bg); border: 1px solid var(--border); }
.pill.pending { color: var(--warn); border-color: currentColor; }
.pill.confirmed { color: var(--accent); border-color: currentColor; }
.pill.completed { color: var(--ok); border-color: currentColor; }
.pill.cancelled { color: var(--muted); text-decoration: line-through; }

.dropzone {
  border: 2px dashed var(--border); border-radius: var(--radius); padding: 28px; text-align: center;
  cursor: pointer; transition: .15s;
}
.dropzone.drag, .dropzone:hover { border-color: var(--accent); background: var(--accent-soft); }

.empty { text-align: center; color: var(--muted); padding: 28px; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 14px; }
.tabs button { all: unset; cursor: pointer; padding: 8px 12px; color: var(--muted); border-bottom: 2px solid transparent; }
.tabs button.active { color: var(--accent); border-color: var(--accent); font-weight: 600; }

.toast {
  position: fixed; bottom: 20px; right: 20px; background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: 8px; box-shadow: 0 6px 20px rgba(0,0,0,.2); z-index: 100;
  opacity: 0; transform: translateY(10px); transition: .2s; pointer-events: none; max-width: 420px;
}
.toast.show { opacity: 1; transform: none; }
.toast.error { background: var(--danger); color: #fff; }

dialog { border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); color: var(--text); padding: 22px; width: min(640px, 92vw); }
dialog::backdrop { background: rgba(0,0,0,.4); }
.chunk { background: var(--bg); border-radius: 8px; padding: 10px; margin-bottom: 8px; white-space: pre-wrap; font-size: 13px; }

.convo { display: grid; grid-template-columns: 320px 1fr; gap: 16px; }
.convo-list { max-height: 70vh; overflow-y: auto; }
.convo-item { padding: 10px; border-radius: 8px; cursor: pointer; border: 1px solid transparent; }
.convo-item:hover { background: var(--bg); }
.convo-item.active { border-color: var(--accent); background: var(--accent-soft); }
.bubble { max-width: 80%; padding: 8px 12px; border-radius: 12px; margin: 6px 0; white-space: pre-wrap; }
.bubble.user { background: var(--accent); color: #fff; margin-left: auto; }
.bubble.assistant { background: var(--bg); }

.slot-day { margin-bottom: 10px; }
.slot-day .slots { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.slot-day .slots span { font-size: 12px; padding: 2px 8px; border: 1px solid var(--border); border-radius: 6px; font-variant-numeric: tabular-nums; }

pre.code { background: var(--bg); border: 1px solid var(--border); padding: 12px; border-radius: 8px; overflow-x: auto; font-size: 12px; }

/* login */
.center { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login { width: min(380px, 100%); }

@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; flex-direction: row; overflow-x: auto; padding: 10px; }
  .sidebar .brand, .sidebar .spacer { display: none; }
  main { padding: 18px 16px; }
  .grid.cols-2, .grid.cols-3, .convo { grid-template-columns: 1fr; }
}