/* Design tokens: a tenant re-skins the lab by overriding these (GET /v1/me -> brand.colors, see theme.js). */
:root {
  --ground: #F5F6F8;
  --card: #FFFFFF;
  --line: #E3E6EA;
  --ink: #12161C;
  --muted: #5B6472;
  --brand: #0B5E73;
  --brand-soft: #E3F1F4;
  --brand-ink: #083F4D;
  --on-brand: #FFFFFF;         /* text on a --brand fill */
  --good: #0B6B3A;
  --bad: #B42318;
  --warn: #B26B00;
  --warn-ink: #7A4A00;         /* warn as text: 4.5:1 on white */
  --radius: 14px;
  --gap: 16px;
  --tap: 44px;
  --font: 'IBM Plex Sans Arabic', system-ui, -apple-system, 'Segoe UI', Tahoma, sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--ground); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.6; }
a { color: var(--brand); }
a:hover { color: var(--brand-ink); }
h1 { font-size: 1.6rem; margin: 0 0 4px; line-height: 1.3; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }
p { margin: 0 0 8px; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.tone-good { color: var(--good); }
.tone-bad { color: var(--bad); }
.warn-text { color: var(--warn-ink); }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }

/* header */
.top { background: var(--card); border-bottom: 1px solid var(--line); }
.top-inner { max-width: 1180px; margin: 0 auto; padding: 8px 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); min-height: var(--tap); }
.mark { width: 36px; height: 36px; border-radius: 10px; background: var(--brand); color: var(--on-brand); display: grid; place-items: center; font-weight: 700; }
.brand-name { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name small { color: var(--muted); }
.nav { display: flex; flex-wrap: wrap; gap: 4px; flex: 1; }
.nav-link { display: inline-flex; align-items: center; min-height: var(--tap); padding: 0 12px; border-radius: 10px; color: var(--ink); text-decoration: none; }
.nav-link:hover { background: var(--brand-soft); color: var(--brand-ink); }
.nav-link[aria-current="page"] { background: var(--brand-soft); color: var(--brand-ink); font-weight: 600; }
.top-tools { display: flex; gap: 4px; margin-inline-start: auto; }

/* layout */
.main { max-width: 1180px; margin: 0 auto; padding: 20px 16px 48px; }
.main:focus { outline: none; }
.screen > * + * { margin-top: var(--gap); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; min-width: 0; }
.page-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 12px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.hello h1 { font-size: 1.8rem; }
.shortcuts { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--gap); }
.shortcut { text-align: start; font: inherit; color: inherit; cursor: pointer; display: flex; flex-direction: column; gap: 4px; min-height: 96px; }
.shortcut:hover { border-color: var(--brand); }
.shortcut strong { color: var(--brand-ink); }

/* controls */
.btn { font: inherit; min-height: var(--tap); padding: 0 16px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--brand); border-color: var(--brand); color: var(--on-brand); font-weight: 600; }
.btn-primary:hover:not(:disabled) { background: var(--brand-ink); }
.btn-secondary:hover:not(:disabled), .btn-ghost:hover:not(:disabled) { border-color: var(--brand); color: var(--brand-ink); }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-danger { color: var(--bad); }
.btn-danger:hover:not(:disabled) { border-color: var(--bad); }
.btn-icon { min-width: var(--tap); padding: 0; font-size: 1.4rem; line-height: 1; }
.btn-stack { display: flex; flex-direction: column; gap: 8px; }
input, select { font: inherit; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 10px; min-height: var(--tap); padding: 0 10px; max-width: 100%; }
input[type="checkbox"] { min-height: 0; width: 22px; height: 22px; accent-color: var(--brand); margin: 0; }
input:focus, select:focus { border-color: var(--brand); }
input.num { width: 7.5em; }
input.tz { width: 12em; }
.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; min-width: 0; }
.field > label, .field > .label { font-weight: 500; }
.field input[type="text"], .field input[type="email"], .field input[type="password"] { width: 100%; }
.hint { color: var(--muted); font-size: .85rem; }
.check { display: flex; align-items: center; gap: 10px; min-height: var(--tap); cursor: pointer; }
.row { display: flex; flex-wrap: wrap; gap: 12px 16px; }
.row > .field { flex: 1 1 180px; }
.row.wrap > .field { flex: 0 1 auto; }

/* notices */
.notice { border-radius: 10px; padding: 10px 14px; border: 1px solid var(--line); background: var(--card); }
.notice-error { border-color: var(--bad); color: var(--bad); }
.notice-ok { border-color: var(--good); color: var(--good); }
.notice-warn { border-color: var(--warn); color: var(--warn-ink); }
.notice-info { background: var(--brand-soft); border-color: transparent; color: var(--brand-ink); }
.engine-msg { margin: 6px 0 0; white-space: pre-wrap; word-break: break-word; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .85rem; color: var(--ink); text-align: left; }

/* login */
.login-wrap { display: grid; place-items: center; min-height: 60vh; }
.login { width: 100%; max-width: 420px; }
.login .btn { width: 100%; margin-top: 8px; }

/* tables */
.table-box { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; min-width: 520px; }
th, td { padding: 10px 12px; text-align: start; border-bottom: 1px solid var(--line); white-space: nowrap; }
thead th { background: var(--ground); font-weight: 600; font-size: .9rem; color: var(--muted); }
tbody tr:last-child > * { border-bottom: 0; }
.row-actions { display: flex; gap: 6px; }
.runs { list-style: none; margin: 0; padding: 0; }
.run { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.run:last-child { border-bottom: 0; }

/* builder */
.builder { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: var(--gap); align-items: start; }
.builder-form > * + * { margin-top: var(--gap); }
.side { position: sticky; top: 12px; display: flex; flex-direction: column; gap: var(--gap); }
.form-section { margin: 0; }
.form-section legend { font-weight: 700; font-size: 1.05rem; padding: 0 6px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: flex; align-items: center; gap: 8px; min-height: var(--tap); padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; cursor: pointer; flex-wrap: wrap; }
.chip.on { border-color: var(--brand); background: var(--brand-soft); }
.chip.off { cursor: not-allowed; background: var(--ground); }
.chip-text { display: flex; flex-direction: column; line-height: 1.2; }
.chip-text small, .chip-why { color: var(--muted); font-size: .78rem; }
.cond { display: flex; gap: 8px; align-items: flex-start; border: 1px solid var(--line); border-radius: 12px; padding: 10px; margin-bottom: 10px; }
.cond-body { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; flex: 1; min-width: 0; }
.operand { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; padding: 8px; background: var(--ground); border-radius: 10px; }
.operand select.ind { font-weight: 600; }
.mini { display: flex; flex-direction: column; gap: 2px; font-size: .8rem; color: var(--muted); }
.mini select, .mini input { color: var(--ink); font-size: 1rem; }
.session-inline { display: flex; flex-wrap: wrap; gap: 8px; }
select.op { align-self: flex-end; font-weight: 600; color: var(--brand-ink); }
.and { align-self: center; color: var(--muted); }
.readback p { margin: 0 0 6px; }
.readback-card { border-color: var(--brand); }

/* result */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; }
.stat { display: flex; flex-direction: column; gap: 4px; padding: 14px; }
.stat-label { color: var(--muted); font-size: .9rem; }
.stat-value { font-size: 1.6rem; font-weight: 700; line-height: 1.2; }
.stat-sub { color: var(--muted); font-size: .85rem; }
.report > * + * { margin-top: var(--gap); }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.tab { font: inherit; min-height: var(--tap); padding: 0 18px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; }
.tab[aria-selected="true"] { background: var(--brand); border-color: var(--brand); color: var(--on-brand); font-weight: 600; }
.eq-wrap { margin: 0; }
.eq { width: 100%; height: auto; max-height: 340px; display: block; direction: ltr; }
.eq-zero { stroke: var(--line); stroke-width: 1; }
.eq-net { fill: none; stroke: var(--brand); stroke-width: 2.5; stroke-linejoin: round; }
.eq-gross { fill: none; stroke: var(--muted); stroke-width: 1.5; stroke-dasharray: 6 5; }
.eq-axis { fill: var(--muted); font-size: 12px; font-family: var(--font); }
.legend { display: flex; gap: 16px; font-size: .85rem; color: var(--muted); margin-top: 6px; }
.key::before { content: ''; display: inline-block; width: 22px; height: 0; vertical-align: middle; margin-inline-end: 6px; border-top: 3px solid var(--brand); }
.key-gross::before { border-top: 2px dashed var(--muted); }
.verdict { border-color: var(--brand); background: var(--brand-soft); }
.verdict-text { font-size: 1.05rem; color: var(--brand-ink); font-weight: 500; }
.progress { text-align: center; padding: 32px 18px; }
.spinner { width: 40px; height: 40px; margin: 0 auto 12px; border-radius: 50%; border: 4px solid var(--brand-soft); border-top-color: var(--brand); animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
details summary { cursor: pointer; min-height: var(--tap); display: flex; align-items: center; }
ul { margin: 0 0 8px; padding-inline-start: 20px; }

/* risk guard */
.risk-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--gap); align-items: start; }
.grid-fields .field input.num { width: 9em; }
.sticky-actions { position: sticky; bottom: 0; z-index: 2; box-shadow: 0 -6px 20px rgba(16, 24, 40, .06); }
.soon { text-align: center; padding: 40px 18px; }

/* channels */
.badge { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 4px; padding: 8px 14px; border-radius: 999px; font-weight: 600; font-size: .9rem; margin: 0; }
.badge-ok { background: var(--brand-soft); color: var(--good); }
.badge-bad { background: #FDECEA; color: var(--bad); border: 1px solid var(--bad); }
.chip-static { display: inline-flex; gap: 6px; align-items: center; padding: 4px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); font-size: .9rem; }
.note { display: block; color: var(--muted); font-size: .78rem; white-space: normal; max-width: 260px; }
code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .85rem; background: var(--ground); padding: 1px 6px; border-radius: 6px; }
textarea.paste { width: 100%; font: inherit; font-size: .9rem; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px; margin: 8px 0; }
textarea.paste:focus { border-color: var(--brand); }
input[type="file"] { padding: 8px; }
.paste-box { margin-top: 12px; }

@media (max-width: 900px) {
  .builder { grid-template-columns: minmax(0, 1fr); }
  .side { position: static; }
}
@media (max-width: 480px) {
  .main { padding: 16px 16px 40px; }
  h1 { font-size: 1.35rem; }
  .card { padding: 14px; }
  .nav { order: 3; flex-basis: 100%; }
  .nav-link { padding: 0 10px; }
  .stat-value { font-size: 1.35rem; }
  .risk-grid { grid-template-columns: minmax(0, 1fr); }
  .cond { padding: 8px; }
  .operand { width: 100%; }
  .run { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  .spinner { animation: none; }
}