:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --surface-2: #f8f9fb;
  --border: #e2e6ec;
  --text: #17202b;
  --muted: #627080;
  --brand: #0b5cad;
  --brand-ink: #ffffff;
  --brand-soft: #e6f0fa;
  --nav: #0f1b2a;
  --nav-text: #c7d2df;
  --nav-active: #ffffff;
  --ok: #18804a;
  --ok-soft: #e4f4ea;
  --warn: #a86400;
  --warn-soft: #fdf1dc;
  --danger: #c0352b;
  --danger-soft: #fbe7e5;
  --info: #5a49c7;
  --info-soft: #eeebfb;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --radius: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d131b; --surface: #151d28; --surface-2: #1a2431; --border: #273445; --text: #e5ebf2; --muted: #93a1b2;
    --brand: #4c9be8; --brand-ink: #08121d; --brand-soft: #16304a; --nav: #0a0f16; --nav-text: #9fb0c2;
    --ok: #4fc483; --ok-soft: #12301f; --warn: #e3a23b; --warn-soft: #34270f; --danger: #f06b5f; --danger-soft: #3a1714;
    --info: #a397f2; --info-soft: #241f45; --shadow: 0 1px 2px rgba(0, 0, 0, .4); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0d131b; --surface: #151d28; --surface-2: #1a2431; --border: #273445; --text: #e5ebf2; --muted: #93a1b2;
  --brand: #4c9be8; --brand-ink: #08121d; --brand-soft: #16304a; --nav: #0a0f16; --nav-text: #9fb0c2;
  --ok: #4fc483; --ok-soft: #12301f; --warn: #e3a23b; --warn-soft: #34270f; --danger: #f06b5f; --danger-soft: #3a1714;
  --info: #a397f2; --info-soft: #241f45; --shadow: 0 1px 2px rgba(0, 0, 0, .4); color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
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; }
h3 { font-size: 14px; margin: 0 0 6px; }
p { margin: 0 0 10px; }
code, .mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 12.5px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.nowrap { white-space: nowrap; }

/* ---------- shell ---------- */
.app { display: grid; grid-template-columns: 236px 1fr; min-height: 100vh; }
.side { background: var(--nav); color: var(--nav-text); padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 650; padding: 4px 8px 16px; }
.brand-mark { width: 30px; height: 30px; border-radius: 8px; background: linear-gradient(135deg, #2a8bf2, #0b5cad); display: grid; place-items: center; font-size: 12px; font-weight: 800; color: #fff; }
.brand small { display: block; font-weight: 400; color: var(--nav-text); font-size: 11.5px; }
.side a { color: var(--nav-text); display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: 7px; text-decoration: none; }
.side a:hover { background: rgba(255, 255, 255, .06); color: #fff; }
.side a.active { background: rgba(255, 255, 255, .11); color: var(--nav-active); font-weight: 600; }
.side .ico { width: 18px; text-align: center; opacity: .9; }
.side .count { margin-left: auto; background: #e8553f; color: #fff; border-radius: 10px; font-size: 11px; padding: 0 7px; font-weight: 700; }
.side .sec { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: #6f8196; padding: 14px 10px 4px; }
.side .grow { flex: 1; }
.side .demo { border-top: 1px solid rgba(255, 255, 255, .08); padding-top: 10px; font-size: 12px; }

.main { min-width: 0; display: flex; flex-direction: column; }
.top { display: flex; align-items: center; gap: 12px; padding: 10px 24px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.top .cust { font-weight: 600; }
.top .spacer { flex: 1; }
.user { display: flex; align-items: center; gap: 8px; }
.avatar { width: 30px; height: 30px; border-radius: 50%; background: var(--brand-soft); color: var(--brand); display: grid; place-items: center; font-weight: 700; font-size: 12px; }
.content { padding: 22px 24px 60px; max-width: 1320px; width: 100%; }
.page-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.page-head .spacer { flex: 1; }
.crumbs { font-size: 12.5px; color: var(--muted); margin-bottom: 6px; }
.demo-banner { background: var(--info-soft); color: var(--info); font-size: 12.5px; padding: 6px 24px; border-bottom: 1px solid var(--border); }

/* ---------- elements ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; margin-bottom: 16px; }
.card.flush { padding: 0; overflow: hidden; }
.card-head { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.card-head .spacer { flex: 1; }
.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)); }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat b { font-size: 24px; letter-spacing: -.02em; }
.stat a { font-size: 12.5px; }

.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); background: var(--surface); color: var(--text); padding: 7px 13px; border-radius: 8px; font: inherit; font-weight: 550; cursor: pointer; white-space: nowrap; }
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn.primary:hover { filter: brightness(1.07); }
.btn.danger { color: var(--danger); }
.btn.danger.solid { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.small { padding: 4px 9px; font-size: 12.5px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.badge { display: inline-flex; align-items: center; gap: 5px; border-radius: 20px; padding: 1px 9px; font-size: 12px; font-weight: 600; background: var(--surface-2); color: var(--muted); border: 1px solid var(--border); white-space: nowrap; }
.badge.ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.badge.info { background: var(--info-soft); color: var(--info); border-color: transparent; }
.badge.brand { background: var(--brand-soft); color: var(--brand); border-color: transparent; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; background: var(--muted); }
.dot.ok { background: var(--ok); } .dot.warn { background: var(--warn); } .dot.danger { background: var(--danger); }
.onair { white-space: nowrap; background: #d92f2f; color: #fff; font-size: 11px; font-weight: 800; padding: 1px 7px; border-radius: 4px; letter-spacing: .04em; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 16px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12px; color: var(--muted); font-weight: 600; background: var(--surface-2); }
tr:last-child td { border-bottom: 0; }
tr.click { cursor: pointer; }
tr.click:hover td { background: var(--surface-2); }
.num { text-align: right; }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 16px; overflow-x: auto; }
.tabs a { padding: 8px 14px; color: var(--muted); border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a:hover { color: var(--text); text-decoration: none; }
.tabs a.on { color: var(--text); border-color: var(--brand); font-weight: 600; }

.notice { border-radius: 8px; padding: 10px 14px; margin-bottom: 14px; display: flex; gap: 10px; align-items: flex-start; }
.notice.info { background: var(--info-soft); color: var(--text); }
.notice.warn { background: var(--warn-soft); }
.notice.danger { background: var(--danger-soft); }
.notice.ok { background: var(--ok-soft); }
.notice .ni { font-weight: 800; }

label.field { display: flex; flex-direction: column; gap: 4px; font-size: 12.5px; color: var(--muted); min-width: 160px; flex: 1; }
input[type=text], input[type=search], input[type=email], input[type=number], select, textarea { font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 7px; padding: 7px 10px; width: 100%; }
textarea { min-height: 80px; resize: vertical; }
input:focus, select:focus, textarea:focus, .btn:focus-visible, a:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; }
.form-row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.check { display: flex; gap: 8px; align-items: flex-start; }

/* ---------- workflow pieces ---------- */
.stepper { display: flex; gap: 0; margin-bottom: 18px; overflow-x: auto; scrollbar-width: none; }
.step { flex: 1; min-width: 84px; display: flex; flex-direction: column; gap: 4px; padding: 0 8px 0 0; position: relative; font-size: 12.5px; color: var(--muted); }
.step .bar { height: 4px; border-radius: 4px; background: var(--border); }
.step.done .bar { background: var(--ok); }
.step.on .bar { background: var(--brand); }
.step.on { color: var(--text); font-weight: 600; }

.checks { list-style: none; margin: 0; padding: 0; }
.checks li { display: flex; gap: 10px; align-items: baseline; padding: 6px 0; border-bottom: 1px dashed var(--border); }
.checks li:last-child { border-bottom: 0; }
.checks .st { width: 18px; text-align: center; font-weight: 800; }
.checks .st.ok { color: var(--ok); } .checks .st.warn { color: var(--warn); } .checks .st.fail { color: var(--danger); } .checks .st.run { color: var(--brand); } .checks .st.wait { color: var(--muted); }
.checks .what { flex: 1; }
.checks .meas { color: var(--muted); font-size: 12.5px; }
.spin { display: inline-block; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.q { border: 1px solid var(--border); border-radius: 10px; padding: 14px; margin-bottom: 12px; background: var(--surface); }
.q.blocking { border-left: 4px solid var(--warn); }
.q.answered { border-left: 4px solid var(--ok); }
.q .opts { display: flex; flex-direction: column; gap: 6px; margin: 10px 0; }
.q .opt { display: flex; gap: 8px; align-items: center; padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; cursor: pointer; }
.q .opt.sel { border-color: var(--brand); background: var(--brand-soft); }
.chat { display: flex; flex-direction: column; gap: 6px; }
.chat .line { display: flex; gap: 10px; font-size: 13px; }
.chat .line .t { color: var(--muted); font-family: ui-monospace, Consolas, monospace; font-size: 12px; min-width: 64px; }

/* panels */
.panel-vis { display: inline-flex; flex-direction: column; gap: 4px; padding: 8px; background: #1d2633; border-radius: 8px; }
.panel-row { display: flex; gap: 4px; }
.tile { width: 54px; height: 54px; border-radius: 5px; background: #2d3a4b; color: #cfd8e3; font-size: 10px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; line-height: 1.2; border: 1px solid #3c4b5f; }
.tile.FDR4 { background: #24364d; } .tile.ENC8 { background: #2e2f4f; } .tile.BTN16 { background: #283f3b; } .tile.DSP2 { background: #3a3324; }
.tile.old { box-shadow: inset 0 0 0 2px #e3a23b; }
.tile.bad { box-shadow: inset 0 0 0 2px #f06b5f; }
.panel-vis.small .tile { width: 26px; height: 22px; font-size: 0; }

/* kanban */
.kanban { display: grid; grid-template-columns: repeat(5, minmax(180px, 1fr)); gap: 12px; overflow-x: auto; padding-bottom: 8px; }
.col { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 10px; min-height: 260px; }
.col h3 { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.col.drop { outline: 2px dashed var(--brand); }
.tcard { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 10px; margin-bottom: 8px; box-shadow: var(--shadow); cursor: pointer; }
.tcard:hover { border-color: var(--brand); }
.tcard .meta { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; margin-top: 6px; font-size: 12px; color: var(--muted); }
.prio-high { color: var(--danger); font-weight: 700; } .prio-low { color: var(--muted); }

/* charts */
.spark { width: 100%; height: 64px; display: block; }
.spark path.l { fill: none; stroke: var(--brand); stroke-width: 1.6; }
.spark path.a { fill: var(--brand-soft); }
.spark line.mark { stroke: var(--danger); stroke-width: 1; stroke-dasharray: 3 2; }

/* overlays */
.drawer-bg, .modal-bg { position: fixed; inset: 0; background: rgba(10, 16, 24, .45); z-index: 30; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(560px, 100%); background: var(--surface); z-index: 31; box-shadow: -8px 0 30px rgba(0, 0, 0, .2); display: flex; flex-direction: column; }
.drawer .dh { display: flex; align-items: center; gap: 10px; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.drawer .db { padding: 16px 18px; overflow-y: auto; flex: 1; }
.modal { position: fixed; left: 50%; top: 8vh; transform: translateX(-50%); width: min(560px, calc(100% - 32px)); background: var(--surface); border-radius: 12px; z-index: 31; box-shadow: 0 20px 60px rgba(0, 0, 0, .3); max-height: 84vh; display: flex; flex-direction: column; }
.modal .mh { padding: 14px 18px; border-bottom: 1px solid var(--border); }
.modal .mb { padding: 16px 18px; overflow-y: auto; }
.modal .mf { padding: 12px 18px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }
.toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 40; }
.toast { background: var(--nav); color: #fff; padding: 10px 14px; border-radius: 8px; box-shadow: var(--shadow); max-width: 360px; font-size: 13px; }

/* sign-in */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; background: radial-gradient(1200px 600px at 20% -10%, #1f4f86 0%, transparent 60%), var(--nav); }
.login { background: var(--surface); border-radius: 14px; padding: 28px; width: min(420px, 100%); box-shadow: 0 20px 60px rgba(0, 0, 0, .35); }
.login h1 { margin: 14px 0 4px; }
.kc { font-size: 12px; color: var(--muted); border-top: 1px solid var(--border); margin-top: 18px; padding-top: 12px; }
.persona { display: flex; gap: 12px; align-items: center; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; cursor: pointer; margin-bottom: 8px; }
.persona:hover { border-color: var(--brand); background: var(--brand-soft); }

/* tour */
.tour li { margin-bottom: 10px; }
.tour .t-title { font-weight: 600; }

@media (max-width: 1000px) {
  .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .g3 { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .app { grid-template-columns: 1fr; }
  .side { position: static; height: auto; flex-direction: row; flex-wrap: nowrap; overflow-x: auto; padding: 8px; gap: 2px; }
  .side .sec, .side .grow, .side .demo, .brand small { display: none; }
  .brand { padding: 4px 8px; }
  .side a { padding: 6px 9px; }
  .top { padding: 8px 16px; flex-wrap: wrap; }
  .content { padding: 16px 16px 60px; }
  .g2, .g4 { grid-template-columns: 1fr; }
  .demo-banner { padding: 6px 16px; }
  th, td { padding: 8px 10px; }
}