:root {
  --bg: #f6f8f8; --surface: #fff; --text: #132022; --muted: #586769; --border: #dfe6e6;
  --brand: #0f766e; --brand-ink: #fff; --brand-soft: #e3f4f1; --ok: #15803d; --warn: #b45309; --bad: #b91c1c;
  --ok-soft: #dcfce7; --warn-soft: #fef3c7; --bad-soft: #fee2e2;
  --radius: 12px; --shadow: 0 1px 2px rgba(16,24,40,.05), 0 4px 16px rgba(16,24,40,.05);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Tamil", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0d1314; --surface: #152022; --text: #e8f0f0; --muted: #98a9ab; --border: #26383a;
    --brand: #2dd4bf; --brand-ink: #062a27; --brand-soft: #123532; --ok-soft: #12351f; --warn-soft: #3a2a0c; --bad-soft: #3d1414; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.55; }
a { color: var(--brand); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h2 { font-size: clamp(22px, 3.5vw, 30px); }
.container { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.center { text-align: center; justify-content: center; }
.small { font-size: 14px; }
.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 9px 16px; border-radius: 10px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn.big { padding: 12px 20px; font-size: 16px; }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn.danger { color: var(--bad); }
.btn:disabled { opacity: .5; cursor: default; }
.link { color: var(--text); text-decoration: none; font-weight: 500; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); min-width: 0; }
.muted { color: var(--muted); }
.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr)); }
.g3 { grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); }
.g4 { grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr)); }
label { display: block; font-size: 13px; font-weight: 600; margin: 12px 0 4px; }
input, select, textarea { width: 100%; min-width: 0; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font: inherit; }
input[type=checkbox] { width: auto; }
textarea { min-height: 90px; resize: vertical; }
.hint { font-size: 12px; color: var(--muted); margin: 4px 0 0; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.pill { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 12px; font-weight: 600; background: var(--brand-soft); color: var(--brand); }
.pill.ok { background: var(--ok-soft); color: var(--ok); } .pill.warn { background: var(--warn-soft); color: var(--warn); } .pill.bad { background: var(--bad-soft); color: var(--bad); }
.error { color: var(--bad); font-size: 14px; min-height: 1.2em; }
.notice { background: var(--brand-soft); border-radius: 10px; padding: 10px 14px; margin: 0 0 16px; }
.table-wrap { overflow-x: auto; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* site */
.nav { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 18px 0; flex-wrap: wrap; }
.nav .row { gap: 14px; }
.logo { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; font-size: 19px; text-decoration: none; color: var(--text); }
.logo span { color: var(--brand); }
.hero { padding: 56px 0 40px; text-align: center; }
.hero h1 { font-size: clamp(32px, 6vw, 54px); letter-spacing: -.02em; margin-top: 14px; }
.hero p { font-size: 18px; color: var(--muted); max-width: 680px; margin: 0 auto 24px; }
.hero p.small { font-size: 14px; margin-top: 14px; }
.section { padding: 40px 0; }
.step { width: 32px; height: 32px; border-radius: 99px; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-weight: 800; margin-bottom: 10px; }
.price { font-size: 34px; font-weight: 800; }
.price .per { font-size: 15px; font-weight: 500; }
.plan { display: flex; flex-direction: column; }
.plan ul { padding-left: 18px; color: var(--muted); flex: 1; }
.plan.featured { border: 2px solid var(--brand); }
.industries { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.faq { max-width: 760px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--border); padding: 12px 0; }
.faq summary { font-weight: 600; color: var(--text); font-size: 16px; }
.doc { max-width: 760px; margin: 16px auto 40px; }
.doc h2 { font-size: 20px; margin-top: 28px; }
.footer { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; border-top: 1px solid var(--border); padding: 24px 0 40px; margin-top: 24px; font-size: 14px; }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }

/* dashboard */
.app { display: grid; grid-template-columns: 230px minmax(0, 1fr); min-height: 100vh; }
.side { background: var(--surface); border-right: 1px solid var(--border); padding: 18px 12px; }
.side a.tab { display: block; padding: 9px 12px; border-radius: 8px; color: var(--text); text-decoration: none; font-weight: 500; margin-bottom: 2px; }
.side a.tab.active { background: var(--brand-soft); color: var(--brand); font-weight: 700; }
.side .logo { font-size: 15px; white-space: nowrap; }
.main { padding: 24px; min-width: 0; }
.stat .n { font-size: 30px; font-weight: 800; }
.bar { height: 8px; background: var(--border); border-radius: 99px; overflow: hidden; }
.bar > div { height: 100%; background: var(--brand); }
details summary { cursor: pointer; color: var(--brand); font-size: 13px; }
.chat { height: 420px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; padding: 12px; background: var(--bg); border-radius: 10px; border: 1px solid var(--border); }
.bubble { max-width: 80%; padding: 9px 13px; border-radius: 14px; font-size: 15px; }
.bubble.ai { background: var(--surface); border: 1px solid var(--border); align-self: flex-start; }
.bubble.me { background: var(--brand); color: var(--brand-ink); align-self: flex-end; }
.bubble.sys { align-self: center; font-size: 12px; color: var(--muted); }
.hours-row { display: grid; grid-template-columns: 40px 70px minmax(0,1fr) minmax(0,1fr); gap: 8px; align-items: center; margin-bottom: 6px; }
.list-item { display: grid; gap: 8px; grid-template-columns: 2fr 1fr 1fr auto; margin-bottom: 6px; }
.faq-item { display: grid; gap: 8px; grid-template-columns: 1fr 2fr auto; margin-bottom: 6px; }
.transcript { font-size: 13px; background: var(--bg); padding: 8px 12px; border-radius: 8px; margin-top: 6px; }
.auth-wrap { max-width: 440px; margin: 40px auto; }
@media (max-width: 760px) {
  .app { grid-template-columns: 1fr; }
  .side { border-right: 0; border-bottom: 1px solid var(--border); display: flex; overflow-x: auto; gap: 4px; padding: 10px; }
  .side .brand-block { display: none; }
  .side select { width: auto; margin: 0 !important; }
  .side a.tab { white-space: nowrap; margin: 0; }
  .main { padding: 16px; }
  .list-item, .faq-item { grid-template-columns: 1fr; }
  .nav .link { display: none; }
}