:root {
  /* Praça brand: black, white, Praça blue; calçada terracotta as the secondary accent. */
  color-scheme: dark;
  --bg: #0E0E0C; --surface: #171715; --surface-2: #22221F; --ink: #F4F3EF; --muted: #A3A29B;
  --line: #2C2C28; --accent: #4A8CFF; --accent-ink: #FFFFFF; --accent-soft: #15233D;
  --btn: #1B5FD9; --btn-hover: #2A6CE6; --btn-ink: #FFFFFF;
  --terra: #E4853A; --terra-soft: #3A2416; --ok: #79C497; --ok-soft: #1A2C21; --warn: #E3B85B; --warn-soft: #33291A;
  --danger: #EF8A83; --danger-soft: #3A1F1D; --radius: 12px;
  --serif: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.55 var(--sans); }
html { height: 100%; } body { min-height: 100%; } body.chat-page { height: 100%; }
body { display: flex; flex-direction: column; }
body > main { flex: 1 0 auto; width: 100%; }
a { color: var(--accent); text-decoration: none; } a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--serif); font-weight: 650; letter-spacing: -0.02em; margin: 0 0 .4em; }
h1 { font-size: 1.75rem; } h2 { font-size: 1.2rem; } h3 { font-size: 1.05rem; }
code { font-family: var(--mono); font-size: .88em; background: var(--surface-2); padding: 1px 5px; border-radius: 5px; }
.muted { color: var(--muted); } .hint { color: var(--muted); font-size: .85rem; } .right { text-align: right; }
.warn-text { color: var(--warn); }

/* top bar */
.topbar { display: flex; align-items: center; gap: 22px; padding: 10px 22px; background: var(--surface);
  border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.logo { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-family: var(--serif); font-size: 1.15rem; font-weight: 600; }
.logo em { color: var(--terra); font-style: italic; }
.logo:hover { text-decoration: none; }
.logo-mark { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 7px; background: var(--accent);
  color: var(--accent-ink); font-family: var(--serif); font-weight: 700; }
.logo.big { font-size: 1.6rem; } .logo.big .logo-mark { width: 38px; height: 38px; font-size: 1.3rem; }
.brand-nav, .top-right { display: flex; align-items: center; gap: 4px; }
.brand-nav { flex: 1; }
.brand-nav a, .top-right a { color: var(--muted); padding: 6px 10px; border-radius: 8px; }
.brand-nav a.on, .top-right a.on { color: var(--ink); background: var(--surface-2); }
.brand-nav a:hover, .top-right a:hover { text-decoration: none; color: var(--ink); }
.brand-name { font-weight: 600; margin-right: 10px; }
.switcher { position: relative; margin-right: 10px; }
.switcher summary { cursor: pointer; font-weight: 600; list-style: none; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; }
.switcher summary::after { content: " ▾"; color: var(--muted); }
.switcher-menu { position: absolute; top: 110%; left: 0; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: 0 8px 24px rgba(0,0,0,.08); min-width: 240px; padding: 6px; display: grid; }
.switcher-menu a { color: var(--ink); } .switcher-menu a.active { background: var(--accent-soft); }
.inline { display: inline; }
.lang-form { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin: 0 6px; }
.lang { border: 0; background: transparent; padding: 5px 9px; cursor: pointer; color: var(--muted); font: inherit; font-size: .8rem; }
.lang.on { background: var(--accent); color: #0E0E0C; font-weight: 600; }

/* layout */
.page { max-width: 1120px; margin: 0 auto; padding: 26px 22px 60px; }
.page-head { margin-bottom: 18px; } .page-head .back { font-size: .9rem; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 16px; }
.card.narrow { max-width: 520px; margin: 40px auto; }
.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; margin-bottom: 8px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-2 > .card { margin-bottom: 0; } .grid-2 { margin-bottom: 16px; }
.stack { display: grid; gap: 12px; align-content: start; }
label { display: grid; gap: 5px; font-size: .88rem; font-weight: 600; }
input[type=text], input[type=email], input[type=password], input[type=date], input:not([type]), select, textarea {
  font: inherit; font-weight: 400; color: var(--ink); background: var(--surface); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; width: 100%; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.row { display: flex; gap: 8px; }
.settings-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px 18px; margin-bottom: 16px; }
.settings-grid .actions { grid-column: 1 / -1; }
.actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 14px; }
.row-form { display: flex; gap: 10px; align-items: center; margin-top: 10px; }

/* buttons */
button, .btn { font: inherit; cursor: pointer; border-radius: 8px; padding: 8px 14px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); display: inline-block; }
.btn:hover { text-decoration: none; }
button.primary, .btn.primary, .btn:not(.secondary):not(.small) { background: var(--btn); color: var(--btn-ink); border-color: var(--btn); font-weight: 600; }
button.primary:hover, .btn.primary:hover { background: var(--btn-hover); border-color: var(--btn-hover); }
button:disabled, button.primary:disabled { opacity: .55; cursor: default; }
button.secondary, .btn.secondary { background: var(--surface); color: var(--ink); }
button.danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
button.small, .btn.small { padding: 4px 10px; font-size: .85rem; }
button.link { background: none; border: 0; color: var(--muted); padding: 6px 8px; }
button.full { width: 100%; }
.danger-text { color: var(--danger) !important; }
button:disabled { opacity: .55; cursor: progress; }

/* tables, pills */
.tbl { width: 100%; border-collapse: collapse; font-size: .92rem; }
.tbl th { text-align: left; font-weight: 600; color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em;
  border-bottom: 1px solid var(--line); padding: 8px 8px; }
.tbl td { border-bottom: 1px solid var(--line); padding: 9px 8px; vertical-align: top; }
.tbl tr.sub td { border-bottom: 1px solid var(--line); padding-top: 0; }
.tbl tr.pii td { background: var(--danger-soft); }
.tbl.mapping .samples { color: var(--muted); font-family: var(--mono); font-size: .8rem; max-width: 340px; overflow-wrap: anywhere; }
.pill { display: inline-block; font-size: .78rem; padding: 2px 9px; border-radius: 99px; background: var(--surface-2); color: var(--muted); font-weight: 600; }
.pill.imported { background: var(--ok-soft); color: var(--ok); }
.pill.needs_mapping { background: var(--warn-soft); color: var(--warn); }
.pill.failed { background: var(--danger-soft); color: var(--danger); }
.tag { display: inline-block; font-size: .72rem; padding: 1px 7px; border-radius: 5px; background: var(--surface-2); color: var(--muted); font-weight: 600; }
.tag.demo { background: var(--terra-soft); color: var(--terra); } .tag.danger { background: var(--danger-soft); color: var(--danger); }
.status-row { display: flex; gap: 8px; flex-wrap: wrap; }
.kv { list-style: none; padding: 0; margin: 0 0 10px; } .kv li { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--line); }
.tabs { display: flex; gap: 6px; margin-top: 10px; } .tabs a { padding: 5px 12px; border-radius: 8px; color: var(--muted); }
.tabs a.on { background: var(--surface); border: 1px solid var(--line); color: var(--ink); }
.row-errors { font-size: .85rem; color: var(--muted); max-height: 260px; overflow: auto; }
.passage-text { white-space: pre-wrap; font-family: var(--sans); font-size: .9rem; margin: 6px 0 0; }
details summary { cursor: pointer; }
.danger-zone summary { color: var(--danger); font-size: .85rem; }
.danger-zone form { text-align: left; margin-top: 8px; min-width: 260px; }

/* flashes */
.flash { margin: 8px 22px; padding: 9px 14px; border-radius: 8px; background: var(--accent-soft); font-size: .9rem; }
.card .flash, .sources .flash { margin: 8px 0; }
.flash.success { background: var(--ok-soft); color: var(--ok); } .flash.error { background: var(--danger-soft); color: var(--danger); }
.flash.warn { background: var(--warn-soft); color: var(--warn); } .flash.small { font-size: .82rem; }
.demo-banner { background: var(--terra); color: #fff; text-align: center; font-size: .85rem; padding: 5px; font-weight: 600; letter-spacing: .02em; }

/* login */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { width: 100%; max-width: 400px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 30px; }
.login-card p { margin: 10px 0 20px; }

/* chat */
.chat-layout { display: grid; grid-template-columns: 270px 1fr; grid-template-rows: minmax(0, 1fr); flex: 1 1 0; min-height: 0; overflow: hidden; }
.chat-side { border-right: 1px solid var(--line); background: var(--surface); padding: 16px; display: flex; flex-direction: column; gap: 14px; overflow: hidden; }
.conv-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
.conv-list a { display: block; padding: 7px 9px; border-radius: 7px; color: var(--ink); font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-list a:hover, .conv-list a.on { background: var(--surface-2); text-decoration: none; }
.side-status { font-size: .8rem; color: var(--muted); display: grid; gap: 6px; border-top: 1px solid var(--line); padding-top: 12px; }
.status-line { display: flex; gap: 7px; align-items: center; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); flex: none; }
.dot.ok { background: var(--ok); } .dot.warn { background: var(--warn); } .dot.off { background: var(--line); }
.chat-main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.thread { flex: 1; overflow-y: auto; padding: 26px max(22px, calc((100% - 820px) / 2)); }
.empty { max-width: 640px; margin: 8vh auto 0; text-align: center; }
.empty h2 { font-size: 1.6rem; }
.suggestions { display: grid; gap: 8px; margin-top: 22px; }
.suggestion { text-align: left; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 11px 14px; color: var(--ink); }
.suggestion:hover { border-color: var(--accent); }
.msg { margin-bottom: 20px; }
.msg.user { display: flex; justify-content: flex-end; }
.msg.user .bubble { background: var(--btn); color: var(--btn-ink); padding: 10px 14px; border-radius: 14px 14px 4px 14px; max-width: 78%; white-space: pre-wrap; }
.msg.assistant .answer { background: var(--surface); border: 1px solid var(--line); border-radius: 14px 14px 14px 4px; padding: 14px 18px; }
.answer h4 { font-family: var(--serif); font-size: 1rem; margin: 14px 0 4px; color: var(--accent); }
.answer h4:first-child { margin-top: 0; } .answer p { margin: 6px 0; } .answer ul, .answer ol { margin: 4px 0 8px; padding-left: 20px; }
.answer li { margin: 3px 0; } .answer blockquote { margin: 10px 0 0; padding: 8px 12px; background: var(--warn-soft); color: var(--warn); border-radius: 8px; font-size: .9rem; }
.cite { font: 600 .72rem var(--mono); padding: 0 5px; border-radius: 5px; border: 0; cursor: pointer; vertical-align: 1px; }
.cite-d { background: var(--accent-soft); color: var(--accent); } .cite-p { background: var(--terra-soft); color: var(--terra); }
.sources { margin: 8px 4px 0; font-size: .86rem; }
.sources-head { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; color: var(--muted); }
.mode { font-weight: 600; font-size: .78rem; padding: 2px 8px; border-radius: 99px; }
.mode.ok { background: var(--ok-soft); color: var(--ok); } .mode.warn { background: var(--warn-soft); color: var(--warn); }
.freshness { font-size: .8rem; }
.sources h5 { margin: 12px 0 4px; font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.refs { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.refs li { display: flex; gap: 9px; padding: 7px 9px; border-radius: 8px; background: var(--surface-2); transition: background .4s; }
.refs li.flash-ref { background: var(--accent-soft); }
.ref { font: 600 .72rem var(--mono); color: var(--accent); min-width: 28px; } .ref.p { color: var(--terra); }
.all-evidence { margin-top: 10px; } .all-evidence summary { color: var(--muted); }
.review-row { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.review-msg { color: var(--ok); font-size: .82rem; }
.msg.suggest-review .review-btn { border-color: var(--terra); color: var(--terra); }
.composer { border-top: 1px solid var(--line); background: var(--surface); padding: 12px max(22px, calc((100% - 820px) / 2)); }
.composer textarea { resize: none; }
.composer-row { display: flex; justify-content: space-between; gap: 10px; margin-top: 8px; }
.composer-row select { width: auto; }
.spinner { display: inline-block; width: 12px; height: 12px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -1px; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 860px) {
  .card { overflow-x: auto; }
  .topbar .brand-nav { flex-wrap: wrap; }
  .grid-2, .settings-grid { grid-template-columns: 1fr; }
  .chat-layout { grid-template-columns: 1fr; grid-template-rows: auto; overflow: visible; flex: 1 0 auto; }
  .chat-side { display: none; }
  .topbar { flex-wrap: wrap; gap: 8px; }
  .thread { min-height: 60vh; }
}

/* ---- Praça branding ---- */
.topbar { background: var(--bg); border-bottom: 0; box-shadow: 0 1px 0 var(--line); }
.topbar::after { content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 4px;
  background: url("/static/brand/calcada-strip.png") repeat-x left center / auto 8px; opacity: .9; pointer-events: none; }
.logo { gap: 8px; }
.wordmark { height: 24px; width: auto; display: block; }
.ai-badge { font-family: var(--sans); font-size: .72rem; font-weight: 700; letter-spacing: .08em; color: var(--accent);
  border: 1px solid var(--accent); border-radius: 6px; padding: 1px 6px; line-height: 1.4; }
.logo.big .wordmark { height: 44px; } .logo.big .ai-badge { font-size: .85rem; padding: 2px 8px; }
.login-body { background: var(--bg) url("/static/brand/calcada-band.png") repeat-x left bottom / auto 140px; }
.login-card { background: var(--surface); border-color: var(--line); padding: 36px 32px; box-shadow: 0 20px 60px rgba(0,0,0,.45); }
.login-card .logo { margin-bottom: 6px; }
.login-card .tagline { font-size: 1.05rem; color: var(--ink); margin: 18px 0 2px; font-weight: 600; letter-spacing: -0.01em; }
.login-card .tagline-sub { margin: 0 0 22px; }
.login-foot { margin-top: 18px; font-size: .8rem; color: var(--muted); text-align: center; }
.login-foot a { color: var(--muted); } .login-foot a:hover { color: var(--accent); }
.empty h2 { letter-spacing: -0.03em; }
.empty .by { color: var(--muted); font-size: .85rem; margin-top: -4px; }
.chat-side, .composer { background: var(--surface); }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
::selection { background: var(--accent-soft); }

/* ---- performance vs plan ---- */
.section-title { font-size: 1rem; color: var(--muted); font-weight: 600; letter-spacing: .01em; margin: 6px 0 10px; }
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; display: grid; gap: 8px; }
.kpi-card.sub { border-style: dashed; }
.kpi-label { color: var(--muted); font-size: .85rem; font-weight: 600; }
.kpi-value { font-size: 1.55rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; }
.kpi-target { font-size: .95rem; color: var(--muted); font-weight: 500; }
.kpi-foot { display: flex; flex-direction: column; gap: 2px; font-size: .82rem; }
.pbar { width: 100%; height: 6px; display: block; }
.pbar-track { fill: var(--surface-2); }
.pbar-fill, .bar-actual { fill: var(--accent); }
.st-ok.pbar-fill, .bar-actual.st-ok { fill: var(--ok); }
.st-warn.pbar-fill, .bar-actual.st-warn { fill: var(--warn); }
.st-bad.pbar-fill, .bar-actual.st-bad { fill: var(--danger); }
.st-text.st-ok { color: var(--ok); } .st-text.st-warn { color: var(--warn); } .st-text.st-bad { color: var(--danger); }
.st-text.st-none { color: var(--muted); }
.chart { width: 100%; height: auto; display: block; }
.chart .axis { stroke: var(--line); stroke-width: 1; }
.chart .bar-target { fill: var(--surface-2); stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; }
.chart .bar-val { fill: var(--ink); font-size: 11px; font-weight: 600; }
.chart .muted-val, .chart .bar-lbl { fill: var(--muted); font-size: 11px; }
.legend { font-size: .8rem; color: var(--muted); display: inline-flex; align-items: center; gap: 6px; }
.lg { display: inline-block; width: 12px; height: 10px; border-radius: 2px; }
.lg-target { border: 1px dashed var(--muted); background: var(--surface-2); }
.lg-actual { background: var(--accent); margin-left: 8px; }
.tbl-scroll { overflow-x: auto; }
.plan-tbl th, .plan-tbl td { white-space: nowrap; }
.plan-tbl td.num, .plan-tbl th.num { text-align: right; }
.plan-tbl .a-val { font-weight: 650; }
.plan-tbl .t-val, .plan-tbl .t-only { color: var(--muted); font-size: .85rem; }
.plan-tbl .ph-future { opacity: .75; }
.plan-tbl .sub-row th { padding-left: 22px; font-weight: 400; color: var(--muted); }
.plan-tbl td.total { border-left: 1px solid var(--line); }
.plan-tbl sup.src, .legend-note sup { color: var(--accent); font-weight: 700; }
.legend-note { margin: 10px 0 0; }
.empty-card p { margin: 0; color: var(--muted); }
.admin-edit { border-color: var(--accent-soft); }
.setup-row { display: grid; grid-template-columns: 2fr 1fr .6fr .7fr auto; gap: 10px; align-items: end; margin: 12px 0 18px; }
.grid-tbl td, .grid-tbl th { padding: 6px; vertical-align: top; }
.grid-tbl .pair { display: grid; gap: 4px; min-width: 92px; }
.grid-tbl input { padding: 5px 7px; font-size: .85rem; }
.month-remove { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 12px; }

/* ---- case studies ---- */
.case-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.case-card { display: grid; gap: 8px; align-content: start; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px; color: var(--ink); transition: border-color .15s; }
.case-card:hover { text-decoration: none; border-color: var(--accent); }
.case-card h2 { margin: 0; font-size: 1.15rem; }
.case-card p { margin: 0; }
.case-meta { display: flex; gap: 8px; align-items: center; }
.tag.new { background: var(--accent); color: #0E0E0C; }
.read-more { color: var(--accent); font-weight: 600; font-size: .9rem; }
.stat-row { display: flex; flex-wrap: wrap; gap: 8px; }
.stat { background: var(--surface-2); border-radius: 8px; padding: 6px 10px; display: grid; }
.stat b { font-size: 1.05rem; letter-spacing: -0.01em; } .stat span { color: var(--muted); font-size: .78rem; }
.stat-row.big .stat { padding: 10px 14px; } .stat-row.big .stat b { font-size: 1.5rem; color: var(--accent); }
.case-article { max-width: 720px; margin: 0 auto; }
.case-article h1 { font-size: 2rem; margin: 6px 0 10px; letter-spacing: -0.03em; }
.case-article .lead { font-size: 1.1rem; color: var(--muted); }
.case-article .stat-row { margin: 18px 0; }
.case-body { font-size: 1.02rem; line-height: 1.7; }
.case-body h3 { margin: 22px 0 6px; font-size: 1.15rem; }
.case-body ul { padding-left: 20px; }
.case-cta { margin-top: 28px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.case-cta p { margin: 0; }
.case-article.in-card { max-width: none; }
.case-article.in-card h1 { font-size: 1.5rem; }
.stats-inputs { display: grid; gap: 6px; }
.pair-stat { display: grid; grid-template-columns: 1fr 2fr; gap: 6px; }
.row-3 { display: grid; grid-template-columns: 1fr 2fr; gap: 10px; }
@media (max-width: 760px) {
  .setup-row, .row-3 { grid-template-columns: 1fr; }
  .case-cta { flex-direction: column; align-items: flex-start; }
  .brand-nav { overflow-x: auto; }
}