:root {
  --bg: #f5f7fa; --panel: #ffffff; --panel-2: #f0f3f7; --border: #e1e6ed; --text: #17212b; --muted: #5d6b7a; --faint: #8a97a6;
  --brand: #0b6bcb; --brand-ink: #ffffff; --brand-soft: #e3f0fc; --ok: #16794c; --ok-soft: #e2f5ec; --warn: #a15c00; --warn-soft: #fff3df;
  --danger: #c0262d; --danger-soft: #fdeaea; --info-soft: #eaf2fb; --side: #0d1b2a; --side-text: #c4d0dc; --side-active: #1b3048;
  --radius: 10px; --shadow: 0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.08);
  --c1: #0b6bcb; --c2: #16a34a; --c3: #f59e0b; --c4: #dc2626; --c5: #7c3aed;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1419; --panel: #161d24; --panel-2: #1c252e; --border: #2a3540; --text: #e6edf3; --muted: #9aa7b4; --faint: #6b7884;
    --brand: #3b93f0; --brand-soft: #142a40; --ok: #3fb97c; --ok-soft: #12291e; --warn: #f0a845; --warn-soft: #2e2210; --danger: #f06b6b; --danger-soft: #331617;
    --info-soft: #142233; --side: #0a1016; --side-active: #182634; --shadow: none;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1419; --panel: #161d24; --panel-2: #1c252e; --border: #2a3540; --text: #e6edf3; --muted: #9aa7b4; --faint: #6b7884;
  --brand: #3b93f0; --brand-soft: #142a40; --ok: #3fb97c; --ok-soft: #12291e; --warn: #f0a845; --warn-soft: #2e2210; --danger: #f06b6b; --danger-soft: #331617;
  --info-soft: #142233; --side: #0a1016; --side-active: #182634; --shadow: none;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { font: 14px/1.5 "Inter", system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased; }
a { color: var(--brand); text-decoration: none; } a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0; letter-spacing: -.01em; } h2 { font-size: 16px; margin: 0 0 12px; } h3 { font-size: 14px; margin: 0 0 8px; }
.layout { display: grid; grid-template-columns: 228px 1fr; min-height: 100vh; }
.side { background: var(--side); color: var(--side-text); padding: 16px 10px; position: sticky; top: 0; height: 100vh; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; }
.logo { display: flex; align-items: center; gap: 10px; padding: 4px 10px 18px; color: #fff; font-weight: 700; font-size: 16px; letter-spacing: .02em; }
.logo-mark { width: 30px; height: 30px; border-radius: 8px; background: linear-gradient(135deg, #0b6bcb, #19b3a6); display: grid; place-items: center; font-size: 13px; }
.side a { color: var(--side-text); display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px; font-weight: 500; }
.side a:hover { background: var(--side-active); text-decoration: none; color: #fff; }
.side a.active { background: var(--side-active); color: #fff; box-shadow: inset 3px 0 0 #3b93f0; }
.side .sec { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: #6f8296; padding: 14px 10px 4px; }
.side .badge { margin-left: auto; background: #3b93f0; color: #fff; border-radius: 99px; padding: 0 7px; font-size: 11px; }
.side .foot { margin-top: auto; padding: 10px; font-size: 12px; color: #6f8296; }
.main { min-width: 0; }
.topbar { display: flex; align-items: center; gap: 12px; padding: 14px 28px; border-bottom: 1px solid var(--border); background: var(--panel); position: sticky; top: 0; z-index: 5; }
.topbar .grow { flex: 1; }
.content { padding: 24px 28px 60px; max-width: 1400px; }
.sandbox-bar { background: var(--warn-soft); color: var(--warn); border-bottom: 1px solid var(--border); padding: 7px 28px; font-weight: 600; font-size: 13px; }
.page-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.page-head .grow { flex: 1; }
.sub { color: var(--muted); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
.card + .card { margin-top: 16px; }
.grid > .card + .card { margin-top: 0; } /* grid gap already spaces grid items */
.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(2, minmax(0,1fr)); } .g3 { grid-template-columns: repeat(3, minmax(0,1fr)); } .g4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.kpi { padding: 14px 16px; }
.kpi .v { font-size: 26px; font-weight: 700; letter-spacing: -.02em; }
.kpi .l { color: var(--muted); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.kpi .s { color: var(--faint); font-size: 12px; }
button, .btn { font: inherit; font-weight: 600; border: 1px solid var(--border); background: var(--panel); color: var(--text); border-radius: 8px; padding: 7px 14px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
button:hover { background: var(--panel-2); }
button.primary { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
button.primary:hover { filter: brightness(1.08); }
button.danger { color: var(--danger); } button.danger.solid { background: var(--danger); color: #fff; border-color: var(--danger); }
button.ghost { border-color: transparent; background: transparent; }
button.sm { padding: 4px 10px; font-size: 13px; }
button:disabled { opacity: .5; cursor: not-allowed; }
input, select, textarea { font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; width: 100%; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; }
input[type=checkbox], input[type=radio] { width: auto; }
textarea { resize: vertical; min-height: 80px; }
label.f { display: block; margin-bottom: 12px; } label.f > span { display: block; font-weight: 600; font-size: 13px; margin-bottom: 4px; } label.f small { color: var(--muted); font-weight: 400; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; } .row > .grow { flex: 1; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0 14px; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr.click:hover td { background: var(--panel-2); cursor: pointer; }
.table-wrap { overflow-x: auto; }
.pill { display: inline-block; padding: 1px 9px; border-radius: 99px; font-size: 12px; font-weight: 600; background: var(--panel-2); color: var(--muted); white-space: nowrap; }
.pill.ok { background: var(--ok-soft); color: var(--ok); } .pill.warn { background: var(--warn-soft); color: var(--warn); } .pill.danger { background: var(--danger-soft); color: var(--danger); } .pill.info { background: var(--brand-soft); color: var(--brand); }
.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 10px; background: var(--info-soft); border: 1px solid var(--border); }
.alert.warn { background: var(--warn-soft); color: var(--warn); } .alert.danger { background: var(--danger-soft); color: var(--danger); } .alert.ok { background: var(--ok-soft); color: var(--ok); }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 18px; overflow-x: auto; }
.tabs a { padding: 9px 14px; color: var(--muted); font-weight: 600; border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a.active { color: var(--brand); border-color: var(--brand); } .tabs a:hover { text-decoration: none; color: var(--text); }
.muted { color: var(--muted); } .faint { color: var(--faint); } .small { font-size: 12px; } .right { text-align: right; } .mono { font-family: ui-monospace, Consolas, monospace; font-size: 12.5px; }
.empty { text-align: center; padding: 50px 20px; color: var(--muted); }
.empty h3 { color: var(--text); font-size: 16px; }
.bar { height: 6px; background: var(--panel-2); border-radius: 99px; overflow: hidden; min-width: 60px; }
.bar > i { display: block; height: 100%; background: var(--brand); border-radius: 99px; }
.modal-bg { position: fixed; inset: 0; background: rgba(10,16,24,.5); display: grid; place-items: center; z-index: 50; padding: 16px; }
.modal { background: var(--panel); border-radius: 12px; width: min(640px, 100%); max-height: 90vh; overflow: auto; box-shadow: 0 20px 50px rgba(0,0,0,.3); }
.modal.wide { width: min(980px, 100%); }
.modal header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; } .modal header h2 { margin: 0; flex: 1; }
.modal .body { padding: 18px 20px; } .modal footer { padding: 12px 20px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }
.toasts { position: fixed; bottom: 18px; right: 18px; display: flex; flex-direction: column; gap: 8px; z-index: 99; }
.toast { background: var(--text); color: var(--panel); padding: 10px 16px; border-radius: 8px; box-shadow: var(--shadow); max-width: 420px; }
.toast.err { background: var(--danger); color: #fff; }
.switch { position: relative; display: inline-block; width: 38px; height: 22px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch span { position: absolute; inset: 0; background: var(--border); border-radius: 99px; cursor: pointer; transition: .15s; }
.switch span::before { content: ""; position: absolute; width: 16px; height: 16px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: .15s; }
.switch input:checked + span { background: var(--brand); } .switch input:checked + span::before { transform: translateX(16px); }
.opt { display: flex; gap: 14px; align-items: flex-start; padding: 14px 0; border-bottom: 1px solid var(--border); }
.opt:last-child { border-bottom: 0; } .opt .grow { flex: 1; } .opt b { display: block; }
.split { display: grid; grid-template-columns: 340px 1fr; gap: 0; height: calc(100vh - 140px); border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); overflow: hidden; }
.split .list { border-right: 1px solid var(--border); overflow-y: auto; }
.split .pane { overflow-y: auto; padding: 20px; }
.thread-item { padding: 12px 14px; border-bottom: 1px solid var(--border); cursor: pointer; }
.thread-item:hover { background: var(--panel-2); } .thread-item.active { background: var(--brand-soft); }
.thread-item.unread .who { font-weight: 700; } .thread-item .who { display: flex; gap: 6px; align-items: center; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--brand); display: inline-block; }
.msg { border: 1px solid var(--border); border-radius: 10px; padding: 14px; margin-bottom: 12px; }
.msg.in { background: var(--panel); } .msg.out { background: var(--panel-2); }
.msg .meta { font-size: 12px; color: var(--muted); margin-bottom: 8px; display: flex; gap: 8px; flex-wrap: wrap; }
.msg .body { white-space: pre-wrap; word-wrap: break-word; }
.steps { display: grid; grid-template-columns: 260px 1fr; gap: 16px; align-items: start; }
.step-list .step { border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; margin-bottom: 8px; cursor: pointer; background: var(--panel); }
.step-list .step.active { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand); }
.step-list .wait { font-size: 12px; color: var(--muted); padding: 2px 12px 8px; display: flex; gap: 6px; align-items: center; }
.step-list .wait input { width: 56px; padding: 3px 6px; } .step-list .wait select { width: auto; padding: 3px 6px; }
.variants { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }
.variants button.active { background: var(--brand-soft); border-color: var(--brand); color: var(--brand); }
.lint li { margin-bottom: 4px; }
.kanban { display: grid; grid-template-columns: repeat(6, minmax(220px, 1fr)); gap: 12px; overflow-x: auto; }
.kanban .col { background: var(--panel-2); border-radius: 10px; padding: 10px; min-height: 300px; }
.kanban .col h3 { display: flex; justify-content: space-between; text-transform: capitalize; }
.kanban .lead-card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px; margin-bottom: 8px; cursor: grab; }
.kanban .col.drop { outline: 2px dashed var(--brand); }
.chart { width: 100%; height: 200px; }
.legend { display: flex; gap: 14px; font-size: 12px; color: var(--muted); flex-wrap: wrap; } .legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }
.auth { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.auth .card { width: min(420px, 100%); padding: 28px; }
.check-list li { margin: 4px 0; } .check-list .ok { color: var(--ok); } .check-list .bad { color: var(--danger); }
.hidden { display: none !important; }
.nl-toolbar { gap: 2px; border: 1px solid var(--border); border-bottom: 0; border-radius: 8px 8px 0 0; padding: 4px; background: var(--panel-2); }
.nl-editor { min-height: 360px; border: 1px solid var(--border); border-radius: 0 0 8px 8px; padding: 16px 20px; background: #fff; color: #1f2933; font: 16px/1.6 -apple-system, Segoe UI, Helvetica, Arial, sans-serif; overflow-wrap: anywhere; }
.nl-editor:focus { outline: 2px solid var(--brand); outline-offset: -1px; }
.nl-editor img { max-width: 100%; height: auto; }
.nl-editor h1 { font-size: 26px; margin: 0 0 12px; } .nl-editor h2 { font-size: 20px; margin: 16px 0 8px; }
/* Long unbreakable strings (URLs, message ids) must wrap instead of widening the page. */
.grid > *, .card, .split .pane { min-width: 0; }
.msg .body, .msg .meta, .mono, .alert, td.small, .thread-item { overflow-wrap: anywhere; }
.spinner { width: 16px; height: 16px; border: 2px solid var(--border); border-top-color: var(--brand); border-radius: 50%; animation: spin .7s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }
.menu-btn { display: none !important; }
.g-2-1 { grid-template-columns: 2fr 1fr; } .g-1-2 { grid-template-columns: 1fr 2fr; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.switch input:focus-visible + span { outline: 2px solid var(--brand); outline-offset: 2px; }
.lead-card select { margin-top: 6px; padding: 3px 6px; font-size: 12px; }
@media (max-width: 1100px) { .g4 { grid-template-columns: repeat(2, minmax(0,1fr)); } .steps { grid-template-columns: 1fr; } }
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .side { position: fixed; z-index: 40; left: -240px; width: 228px; transition: left .2s; } .side.open { left: 0; }
  .menu-btn { display: inline-flex !important; }
  .content, .topbar { padding-left: 16px; padding-right: 16px; } .sandbox-bar { padding: 7px 16px; }
  .g2, .g3, .g4, .g-2-1, .g-1-2 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; height: auto; } .split .list { max-height: 45vh; border-right: 0; border-bottom: 1px solid var(--border); }
}