:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --text: #1c2430;
  --muted: #667085;
  --border: #e3e7ec;
  --accent: #1f6feb;
  --accent-text: #ffffff;
  --ok: #138a4b;
  --ok-bg: #e5f6ec;
  --warn: #9a6200;
  --warn-bg: #fff4dc;
  --bad: #b42318;
  --bad-bg: #fde8e7;
  --side: #0f1b2d;
  --side-text: #c9d3e0;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e131a; --surface: #161d27; --text: #e6ebf1; --muted: #94a0b2; --border: #263142;
    --accent: #4c8dff; --ok: #4fd18b; --ok-bg: #12301f; --warn: #f2b84b; --warn-bg: #352812;
    --bad: #ff7a70; --bad-bg: #3a1714; --side: #0a0f16;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--accent); }
button, input, select { font: inherit; }

.btn { border: 1px solid var(--border); background: var(--surface); color: var(--text); padding: 8px 14px; border-radius: 8px; cursor: pointer; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.danger { color: var(--bad); }
.btn:disabled { opacity: .55; cursor: default; }
.input { width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text); }
.input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
label.field { display: block; margin-bottom: 14px; }
label.field > span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 5px; }
.hint { font-size: 13px; color: var(--muted); }
.error { color: var(--bad); font-size: 14px; min-height: 1.2em; }

/* Login */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 360px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 28px; }
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card p { margin: 0 0 22px; color: var(--muted); }
.login-card .btn { width: 100%; padding: 10px; }

/* Shell */
.shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.side { background: var(--side); color: var(--side-text); padding: 18px 12px; display: flex; flex-direction: column; gap: 4px; }
.side .brand { color: #fff; font-weight: 700; font-size: 17px; padding: 4px 10px 18px; }
.side a, .side span.soon { display: block; padding: 8px 10px; border-radius: 8px; color: var(--side-text); text-decoration: none; }
.side a.active, .side a:hover { background: rgba(255,255,255,.08); color: #fff; }
.side span.soon { opacity: .45; cursor: default; }
.side span.soon small { font-size: 11px; }
.side .spacer { flex: 1; }
.side .who { font-size: 13px; padding: 8px 10px; opacity: .8; }
main { padding: 24px; min-width: 0; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.page-head h1 { margin: 0; font-size: 22px; }

/* Numbers */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 14px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.card .top { display: flex; align-items: center; gap: 10px; }
.card .dot { width: 12px; height: 12px; border-radius: 50%; flex: none; }
.card .name { font-weight: 600; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card .meta { font-size: 13px; color: var(--muted); }
.card .actions { display: flex; gap: 8px; flex-wrap: wrap; }
.badge { font-size: 12px; padding: 2px 8px; border-radius: 99px; white-space: nowrap; }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.bad { background: var(--bad-bg); color: var(--bad); }
.empty { background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius); padding: 32px; text-align: center; color: var(--muted); }
.notice { background: var(--warn-bg); color: var(--warn); border-radius: 8px; padding: 10px 12px; margin-bottom: 14px; font-size: 14px; }

/* Modal */
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: grid; place-items: center; padding: 16px; z-index: 10; }
.modal { background: var(--surface); border-radius: 14px; width: 100%; max-width: 440px; padding: 22px; max-height: calc(100vh - 32px); overflow: auto; }
.modal h2 { margin: 0 0 14px; font-size: 19px; }
.modal .row { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; flex-wrap: wrap; }
.qr-box { display: grid; place-items: center; background: #fff; border-radius: 10px; padding: 12px; min-height: 280px; }
.qr-box img { width: 256px; height: 256px; image-rendering: pixelated; }
.pair-code { font: 700 30px/1 ui-monospace, Consolas, monospace; letter-spacing: 4px; color: #111; }
.tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.tabs button { flex: 1; }
.tabs button.on { border-color: var(--accent); color: var(--accent); }
.checks label { display: flex; align-items: center; gap: 8px; padding: 5px 0; }

/* Toast */
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ok); color: #fff; padding: 10px 16px; border-radius: 8px; z-index: 50; max-width: calc(100vw - 32px); }
.toast.bad { background: var(--bad); }

/* Tables / forms */
.table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.table th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
.table tr:last-child td { border-bottom: 0; }
.table tr.clickable { cursor: pointer; }
.table tr.clickable:hover td { background: var(--bg); }
.table-wrap { overflow-x: auto; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.form-grid .full { grid-column: 1 / -1; }
textarea.input { min-height: 90px; resize: vertical; }
textarea.input.tall { min-height: 180px; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.modal.wide { max-width: 760px; }
.switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.chip { display: inline-block; font-size: 12px; background: var(--bg); border: 1px solid var(--border); border-radius: 99px; padding: 1px 8px; margin: 2px 4px 2px 0; }

/* Flow builder */
.flow-top { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.flow-top select { max-width: 320px; }
.flow-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.flow-tabs button.on { border-color: var(--accent); color: var(--accent); }
.blocks { display: flex; flex-direction: column; gap: 10px; }
.block { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; display: grid; grid-template-columns: 22px 1fr auto; gap: 10px; align-items: start; }
.block.dragging { opacity: .4; }
.block.drop-before { box-shadow: 0 -3px 0 var(--accent); }
.block .handle { cursor: grab; color: var(--muted); user-select: none; font-size: 18px; line-height: 1; padding-top: 4px; }
.block .kind { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin-bottom: 6px; }
.block .kind .warn { color: var(--bad); text-transform: none; letter-spacing: 0; font-weight: 500; }
.block .tools { display: flex; gap: 4px; }
.block .tools button { padding: 4px 8px; }
.block .body { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.block .row2 { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.block .row2 .input { flex: 1; min-width: 140px; }
.preview img, .preview video { max-width: 260px; max-height: 200px; border-radius: 8px; display: block; }
.preview audio { width: 260px; max-width: 100%; }
.progress { height: 6px; background: var(--border); border-radius: 99px; overflow: hidden; }
.progress > div { height: 100%; background: var(--accent); width: 0; transition: width .2s; }
.add-bar { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.add-bar button { font-size: 13px; padding: 6px 10px; }
.save-bar { position: sticky; bottom: 0; background: var(--bg); padding: 12px 0; margin-top: 14px; display: flex; gap: 10px; align-items: center; }

@media (max-width: 760px) {
  .form-grid { grid-template-columns: 1fr; }
  .shell { grid-template-columns: 1fr; }
  .side { flex-direction: row; flex-wrap: wrap; align-items: center; padding: 10px 12px; }
  .side .brand { padding: 4px 8px; }
  .side .spacer, .side span.soon { display: none; }
  main { padding: 16px; }
}