:root {
  --bg: #f7f3ec;
  --paper: #fffdf9;
  --ink: #1f1c17;
  --ink-2: #5b554b;
  --ink-3: #8f887c;
  --line: #e6dfd3;
  --accent: #1f5c45;
  --accent-soft: #e3efe8;
  --warn: #9a5b12;
  --warn-soft: #fbefdc;
  --bad: #a3322a;
  --bad-soft: #f8e3e0;
  --radius: 12px;
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--ink); font: 15px/1.55 var(--sans); }
button { font: inherit; cursor: pointer; }

.app { display: grid; grid-template-columns: 250px minmax(0, 1fr) 360px; height: 100vh; }

/* Rail */
.rail { border-right: 1px solid var(--line); padding: 20px 16px; display: flex; flex-direction: column; gap: 14px; overflow: auto; }
.brand { font: 600 20px var(--serif); display: flex; align-items: center; gap: 10px; }
.mark { width: 28px; height: 28px; border-radius: 8px; background: var(--accent); color: #fff; display: grid; place-items: center; font-size: 15px; }
.eyebrow { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }
.eyebrow.pad { margin-top: 6px; }
.account-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: grid; gap: 6px; }
.account-name { font-weight: 600; }
.account-meta { font-size: 12px; color: var(--ink-3); display: flex; gap: 8px; align-items: center; }
.badge { font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 99px; background: var(--warn-soft); color: var(--warn); }
.badge.live { background: var(--accent-soft); color: var(--accent); }
.chat-list { display: grid; gap: 2px; }
.chat-list a { display: block; padding: 7px 10px; border-radius: 8px; color: var(--ink-2); text-decoration: none; font-size: 13.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-list a:hover { background: var(--paper); }
.chat-list a.active { background: var(--paper); color: var(--ink); font-weight: 500; }
.rail-foot { margin-top: auto; font-size: 11px; color: var(--ink-3); }

.btn { border: 1px solid transparent; border-radius: 9px; padding: 9px 14px; font-weight: 500; }
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.primary:disabled { opacity: .5; cursor: default; }
.btn.ghost { background: transparent; border-color: var(--line); color: var(--ink-2); }
.btn.ghost:hover { background: var(--paper); color: var(--ink); }
.btn.bad { background: transparent; border-color: var(--line); color: var(--bad); }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn.block { width: 100%; }

/* Main */
.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.kpis { display: flex; gap: 28px; padding: 16px 32px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.kpi .label { font-size: 11px; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-3); font-weight: 600; }
.kpi .value { font: 600 22px var(--serif); }
.kpi .value small { font: 400 12px var(--sans); color: var(--ink-3); }

.thread { flex: 1; overflow: auto; padding: 28px 32px; display: flex; flex-direction: column; gap: 22px; }
.empty { max-width: 620px; margin: 8vh auto 0; text-align: center; }
.empty h1 { font: 600 34px/1.15 var(--serif); margin: 0 0 12px; }
.empty p { color: var(--ink-2); margin: 0 0 24px; }
.suggestions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; text-align: left; }
.suggestions button { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; color: var(--ink); line-height: 1.4; }
.suggestions button:hover { border-color: var(--accent); }

.msg { max-width: 760px; width: 100%; margin: 0 auto; }
.msg.user .bubble { margin-left: auto; width: fit-content; max-width: 80%; background: var(--ink); color: #fbf8f2; padding: 10px 14px; border-radius: 14px 14px 4px 14px; white-space: pre-wrap; }
.msg.assistant .body > *:first-child { margin-top: 0; }
.msg.assistant h1, .msg.assistant h2, .msg.assistant h3 { font-family: var(--serif); font-weight: 600; line-height: 1.25; margin: 18px 0 6px; }
.msg.assistant h1 { font-size: 22px; } .msg.assistant h2 { font-size: 19px; } .msg.assistant h3 { font-size: 16px; }
.msg.assistant p { margin: 8px 0; }
.msg.assistant ul, .msg.assistant ol { padding-left: 22px; margin: 8px 0; }
.msg.assistant li { margin: 3px 0; }
.msg.assistant code { background: #efe9de; padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.table-wrap { overflow-x: auto; margin: 10px 0; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); }
.msg.assistant table { border-collapse: collapse; font-size: 13.5px; width: 100%; }
.msg.assistant th, .msg.assistant td { padding: 7px 12px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
.msg.assistant th { font-weight: 600; background: #f3eee5; }
.msg.assistant tr:last-child td { border-bottom: 0; }

.tools { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.tool-chip { font-size: 12px; background: var(--paper); border: 1px solid var(--line); color: var(--ink-2); padding: 3px 9px; border-radius: 99px; }
.tool-chip b { color: var(--ink); font-weight: 600; }
.thinking { color: var(--ink-3); font-size: 13px; display: flex; align-items: center; gap: 8px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: pulse 1s infinite ease-in-out; }
@keyframes pulse { 50% { opacity: .25; } }
.error-note { color: var(--bad); background: var(--bad-soft); padding: 8px 12px; border-radius: 8px; font-size: 13px; }

.composer { display: flex; gap: 10px; padding: 16px 32px 22px; border-top: 1px solid var(--line); }
.composer textarea { flex: 1; resize: none; border: 1px solid var(--line); border-radius: 12px; padding: 11px 14px; font: inherit; background: var(--paper); max-height: 180px; }
.composer textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }

/* Changes */
.changes { border-left: 1px solid var(--line); padding: 20px 18px; overflow: auto; background: #f3eee6; }
.changes-head { display: flex; align-items: center; gap: 10px; }
.changes h2 { font: 600 20px var(--serif); margin: 0; }
.count { background: var(--accent); color: #fff; border-radius: 99px; font-size: 12px; font-weight: 600; padding: 1px 8px; }
.count:empty { display: none; }
.changes-sub { font-size: 12.5px; color: var(--ink-3); margin: 6px 0 16px; }

.change { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; margin-bottom: 12px; }
.change.pending { border-color: var(--accent); box-shadow: 0 1px 0 var(--accent-soft), 0 0 0 3px var(--accent-soft); }
.change-top { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.change-title { font-weight: 600; font-size: 14px; }
.status { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; white-space: nowrap; }
.status.pending { color: var(--accent); } .status.applied { color: var(--accent); }
.status.failed, .status.undo_failed { color: var(--bad); } .status.denied, .status.undone { color: var(--ink-3); }
.status.applying { color: var(--warn); }
.reason { font-size: 13px; color: var(--ink-2); margin: 6px 0 8px; }
.items { width: 100%; font-size: 12.5px; border-collapse: collapse; }
.items td { padding: 4px 0; border-top: 1px dashed var(--line); vertical-align: top; }
.items td.label { color: var(--ink); padding-right: 8px; word-break: break-word; }
.items td.diff { text-align: right; white-space: nowrap; color: var(--ink-2); }
.items .before { text-decoration: line-through; color: var(--ink-3); }
.items .after { color: var(--accent); font-weight: 600; }
.more { font-size: 12px; color: var(--ink-3); margin-top: 4px; background: none; border: 0; padding: 0; text-decoration: underline; }
.change-actions { display: flex; gap: 8px; margin-top: 12px; }
.change-foot { font-size: 12px; color: var(--ink-3); margin-top: 8px; }
.change .err { font-size: 12.5px; color: var(--bad); margin-top: 8px; }
.msg .change { margin: 12px 0 0; }

dialog { border: 1px solid var(--line); border-radius: 16px; padding: 0; width: min(560px, calc(100vw - 32px)); background: var(--paper); color: var(--ink); }
dialog::backdrop { background: rgba(31, 28, 23, .35); }
.dialog-body { padding: 22px; }
.dialog-body h2 { font: 600 22px var(--serif); margin: 0 0 6px; }
.muted { color: var(--ink-2); font-size: 14px; }
.dialog-actions { display: flex; justify-content: flex-end; margin-top: 16px; }
.conn { border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin: 10px 0; }
.conn-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.cust { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-top: 1px dashed var(--line); font-size: 14px; gap: 8px; }
.cust small { color: var(--ink-3); }
.option-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

@media (max-width: 1100px) {
  .app { grid-template-columns: 220px minmax(0, 1fr); }
  .changes { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--line); }
  .app { height: auto; min-height: 100vh; }
  .main { height: 100vh; }
}
@media (max-width: 720px) {
  .app { grid-template-columns: 1fr; }
  .rail { border-right: 0; border-bottom: 1px solid var(--line); }
  .chat-list, .rail-foot, .eyebrow.pad { display: none; }
  .kpis, .thread, .composer { padding-left: 16px; padding-right: 16px; }
  .suggestions { grid-template-columns: 1fr; }
  .main { height: auto; min-height: 80vh; }
}

/* Sign in */
[hidden] { display: none !important; }
.auth { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; }
.auth-card { width: min(400px, 100%); background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 28px; display: grid; gap: 14px; }
.auth-card h1 { font: 600 26px var(--serif); margin: 6px 0 0; }
.auth-card .muted { margin: -6px 0 4px; }
.auth-card label { display: grid; gap: 6px; font-size: 13px; font-weight: 500; color: var(--ink-2); }
.auth-card input { border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px; font: inherit; background: #fff; color: var(--ink); }
.auth-card input:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.auth-msg { font-size: 13px; padding: 8px 12px; border-radius: 8px; background: var(--bad-soft); color: var(--bad); }
.auth-msg.ok { background: var(--accent-soft); color: var(--accent); }
.auth-switch { margin: 0; font-size: 13px; color: var(--ink-2); text-align: center; }
.auth-switch a, .who a { color: var(--accent); }
.who { display: flex; gap: 8px; justify-content: space-between; margin-bottom: 6px; font-size: 12px; color: var(--ink-2); }
.who span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.who a { white-space: nowrap; flex: none; }

/* Landing (Swiss layout, forest accent; scoped to .landing so app buttons are untouched) */
.landing { --l-bg: #f6f4ee; --l-ink: #0d0d0d; --l-ink2: #4a4a46; --l-ink3: #8a8a84; --l-acc: #1f5c45; --l-acc-light: #9fd3b8; --l-soft: #e4e2da;
  background: var(--l-bg); color: var(--l-ink); font: 16px/1.55 Archivo, system-ui, sans-serif; min-height: 100vh; }
.lw { max-width: 1240px; margin: 0 auto; padding: 0 40px; }
.l-nav { display: flex; justify-content: space-between; align-items: center; padding: 22px 0; border-bottom: 3px solid var(--l-ink); }
.l-logo { display: flex; align-items: center; gap: 10px; font: 700 19px Archivo; letter-spacing: .02em; text-transform: uppercase; }
.l-logo i { width: 14px; height: 14px; background: var(--l-acc); }
.l-nr { display: flex; gap: 10px; }
.lbtn { font: 600 15px Archivo; padding: 12px 20px; border: 2px solid var(--l-ink); background: transparent; color: var(--l-ink); cursor: pointer; border-radius: 0; }
.lbtn:hover { background: #fff; }
.lbtn.ink { background: var(--l-ink); color: #fff; }
.lbtn.acc { background: var(--l-acc); border-color: var(--l-acc); color: #fff; }
.lbtn.ink:hover, .lbtn.acc:hover { filter: brightness(1.12); }
.lbtn.inv { background: #fff; border-color: #fff; color: var(--l-ink); }
.lbtn.big { padding: 16px 26px; font-size: 16px; }
.lbtn:focus-visible { outline: 3px solid var(--l-acc-light); outline-offset: 2px; }
.l-hero { display: grid; grid-template-columns: 1.25fr .9fr; gap: 56px; align-items: end; padding: 72px 0 64px; }
.l-meta { font: 700 12px Archivo; letter-spacing: .14em; text-transform: uppercase; color: var(--l-ink2); }
.l-meta b { color: var(--l-acc); }
.landing h1 { font: 400 clamp(46px, 7.2vw, 104px)/.92 'Archivo Black', sans-serif; letter-spacing: -.035em; margin: 18px 0 26px; }
.landing h1 span, .l-final h2 span { color: var(--l-acc); }
.l-sub { font-size: 20px; line-height: 1.45; max-width: 560px; margin: 0 0 30px; font-weight: 500; }
.l-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.l-trust { margin-top: 16px; font-size: 14px; color: var(--l-ink2); max-width: 520px; }
.l-card { border: 2px solid var(--l-ink); background: #fff; }
.l-card-h { display: flex; justify-content: space-between; padding: 14px 18px; border-bottom: 2px solid var(--l-ink); font: 700 12px Archivo; letter-spacing: .12em; text-transform: uppercase; }
.l-card-h b { color: var(--l-acc); }
.l-card h3 { font: 400 26px/1.1 'Archivo Black'; margin: 18px 18px 6px; }
.l-card p { margin: 0 18px 14px; color: var(--l-ink2); font-size: 14px; }
.l-t { margin: 0 18px; border-top: 1px solid var(--l-soft); }
.l-t div { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--l-soft); font-size: 14px; }
.l-t s { color: var(--l-ink3); margin-right: 8px; }
.l-t strong { color: var(--l-acc); }
.l-ca { display: flex; margin-top: 18px; border-top: 2px solid var(--l-ink); }
.l-ca span { flex: 1; text-align: center; padding: 15px; font: 700 15px Archivo; }
.l-ca .ok { background: var(--l-acc); color: #fff; }
.l-ca .no { background: #fff; border-left: 2px solid var(--l-ink); }
.l-stats { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 6px solid var(--l-ink); border-bottom: 6px solid var(--l-ink); }
.l-s { padding: 30px 28px 34px 0; border-right: 1px solid var(--l-soft); }
.l-s + .l-s { padding-left: 28px; }
.l-s:last-child { border-right: 0; }
.l-s b { display: block; font: 400 clamp(56px, 7vw, 92px)/1 'Archivo Black'; letter-spacing: -.04em; }
.l-s:first-child b { color: var(--l-acc); }
.l-s span { display: block; margin-top: 12px; font-weight: 700; }
.l-s small { color: var(--l-ink2); font-size: 14px; }
.l-sec { display: grid; grid-template-columns: 200px 1fr; gap: 40px; padding: 56px 0; }
.l-sec + .l-sec { border-top: 3px solid var(--l-ink); }
.l-idx { font: 700 13px Archivo; color: var(--l-acc); letter-spacing: .06em; }
.l-sec h2 { font: 400 48px/1 'Archivo Black'; margin: 0 0 28px; letter-spacing: -.03em; }
.l-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.l-col { border-top: 3px solid var(--l-ink); padding-top: 16px; }
.l-col:first-child { border-color: var(--l-acc); }
.l-col h4 { font: 400 26px 'Archivo Black'; margin: 0 0 6px; }
.l-col:first-child h4 { color: var(--l-acc); }
.l-col p { margin: 0; color: var(--l-ink2); font-size: 15px; }
.l-final { background: var(--l-ink); color: #fff; padding: 64px 56px; display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-top: 8px; }
.l-final h2 { font: 400 54px/.95 'Archivo Black'; margin: 0; letter-spacing: -.03em; max-width: 720px; }
.l-final h2 span { color: var(--l-acc-light); }
.l-foot { display: flex; justify-content: space-between; gap: 12px; padding: 22px 0 36px; font-size: 13px; color: var(--l-ink2); }
.auth-back { font-size: 13px; color: var(--ink-2); text-decoration: none; justify-self: start; }
.auth-back:hover { color: var(--ink); }
@media (max-width: 900px) {
  .lw { padding: 0 16px; }
  .l-hero { grid-template-columns: 1fr; gap: 36px; padding: 44px 0 40px; }
  .l-stats, .l-cols { grid-template-columns: 1fr; }
  .l-s, .l-s + .l-s { padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--l-soft); }
  .l-s:last-child { border-bottom: 0; }
  .l-sec { grid-template-columns: 1fr; gap: 12px; padding: 40px 0; }
  .l-sec h2 { font-size: 34px; }
  .l-final { flex-direction: column; align-items: flex-start; padding: 40px 24px; }
  .l-final h2 { font-size: 36px; }
  .l-nav .lbtn { padding: 8px 12px; font-size: 14px; }
  .l-foot { flex-direction: column; }
}

/* Connections: one section per ad platform */
.plat { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 10px; background: var(--paper); }
.plat-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.plat-actions { display: flex; gap: 6px; }
.plat .conn { margin-top: 10px; }
.adv-form { display: grid; gap: 6px; margin-top: 6px; }
.adv-row { display: flex; gap: 6px; }
.adv-row input { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; font: inherit; }
.badge { white-space: nowrap; }
.account-meta { flex-wrap: wrap; }
#accountId { overflow-wrap: anywhere; }

/* Connectors, change cards, settings */
.dlg-sub { font: 600 13px var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); margin: 18px 0 8px; }
.card-btns { display: flex; gap: 6px; }
.card-btns .btn { flex: 1; }
.change-tags { display: flex; flex-wrap: wrap; gap: 4px; margin: 6px 0 2px; }
.chip { font-size: 11px; padding: 1px 8px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); font-weight: 500; }
.effect { font-size: 13px; color: var(--ink); margin: 6px 0; }
.warn { font-size: 13px; color: var(--bad); background: var(--bad-soft); padding: 7px 10px; border-radius: 8px; margin: 6px 0; }
.btn.danger { background: var(--bad); color: #fff; }
.change-actions { flex-wrap: wrap; }
.usage { font-size: 12px; color: var(--ink-2); margin-bottom: 6px; }
.usage .bar { height: 4px; border-radius: 99px; background: var(--line); margin-top: 4px; overflow: hidden; }
.usage .bar i { display: block; height: 100%; background: var(--accent); }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; border-bottom: 1px solid var(--line); margin: 10px 0 14px; }
.tabs button { border: 0; background: none; padding: 8px 10px; font: 500 14px var(--sans); color: var(--ink-2); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs button.on { color: var(--ink); border-color: var(--accent); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 14px; font-size: 14px; margin: 8px 0 14px; }
.kv dt { color: var(--ink-2); }
.kv dd { margin: 0; }
.codebox { display: flex; gap: 6px; align-items: center; }
.codebox code { flex: 1; min-width: 0; overflow-wrap: anywhere; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; font-size: 12.5px; }
.list-row { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 8px 0; border-top: 1px dashed var(--line); font-size: 14px; }
.audit { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.audit td, .audit th { text-align: left; padding: 6px 4px; border-top: 1px solid var(--line); vertical-align: top; }
.audit .bad { color: var(--bad); }
.expose { display: flex; align-items: center; gap: 8px; padding: 6px 0; font-size: 14px; }
.notice { font-size: 13px; color: var(--warn); background: var(--warn-soft); border-radius: 8px; padding: 8px 10px; margin: 8px 0; }
#settingsDialog { width: min(720px, calc(100vw - 32px)); }