/* Duolign marketing site -- shared styles. Tokens mirror the app's own
   design language (frontend/src/index.css in the Couple_finance_app repo):
   dark-first, the blue->indigo->violet accent gradient, monospace for
   every money figure, a slate text ramp. */

:root {
  --ground: #F7F8FA;
  --ground-2: #FFFFFF;
  --raise: rgba(15, 23, 42, 0.028);
  --raise-strong: rgba(15, 23, 42, 0.045);
  --edge: #E4E7ED;
  --edge-soft: #EDEFF3;
  --ink: #10131A;
  --ink-2: #4B5263;
  --ink-3: #8A909E;
  --accent-a: #0284C7;
  --accent-b: #5457E6;
  --accent-c: #8B24DE;
  --good: #059669;
  --grad: linear-gradient(120deg, var(--accent-a) 0%, var(--accent-b) 54%, var(--accent-c) 100%);
  --shadow: 0 1px 2px rgba(16, 19, 26, 0.05), 0 12px 32px -12px rgba(16, 19, 26, 0.12);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #0A0A11;
    --ground-2: #0E0F17;
    --raise: rgba(255, 255, 255, 0.035);
    --raise-strong: rgba(255, 255, 255, 0.055);
    --edge: #20222E;
    --edge-soft: #191B24;
    --ink: #F1F4F9;
    --ink-2: #A7AEBD;
    --ink-3: #6A7180;
    --accent-a: #38BDF8;
    --accent-b: #6366F1;
    --accent-c: #9333EA;
    --good: #34D399;
    --shadow: 0 1px 0 rgba(255, 255, 255, 0.03) inset, 0 24px 60px -20px rgba(0, 0, 0, 0.6);
  }
}
:root[data-theme="dark"] {
  --ground: #0A0A11;
  --ground-2: #0E0F17;
  --raise: rgba(255, 255, 255, 0.035);
  --raise-strong: rgba(255, 255, 255, 0.055);
  --edge: #20222E;
  --edge-soft: #191B24;
  --ink: #F1F4F9;
  --ink-2: #A7AEBD;
  --ink-3: #6A7180;
  --accent-a: #38BDF8;
  --accent-b: #6366F1;
  --accent-c: #9333EA;
  --good: #34D399;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.03) inset, 0 24px 60px -20px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: "Hanken Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-variant-numeric: tabular-nums;
}

.wrap { max-width: 940px; margin: 0 auto; padding: 0 24px; }
.col { max-width: 660px; }

h1, h2, h3 {
  font-family: "Bricolage Grotesque", "Hanken Grotesk", sans-serif;
  font-weight: 800;
  letter-spacing: -0.021em;
  text-wrap: balance;
  margin: 0;
  color: var(--ink);
}
h1 { font-size: clamp(2.35rem, 6.4vw, 3.65rem); line-height: 1.04; }
h2 { font-size: clamp(1.7rem, 4vw, 2.3rem); line-height: 1.1; font-weight: 700; }
h3 { font-size: 1.06rem; font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: inherit; }

.mono { font-family: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace; font-variant-numeric: normal; }

.eyebrow {
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--grad); border-radius: 2px; }

.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---- top bar (every page) ---- */
header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--ground) 78%, transparent);
  border-bottom: 1px solid var(--edge-soft);
}
.bar { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: "Bricolage Grotesque", sans-serif; font-weight: 700; font-size: 1.12rem; letter-spacing: -0.01em; text-decoration: none; }
.mark { width: 26px; height: 26px; flex: none; }
.bar-cta {
  font: inherit; font-size: 0.9rem; font-weight: 600;
  text-decoration: none;
  padding: 8px 15px; border-radius: 9px;
  border: 1px solid var(--edge);
  color: var(--ink);
  transition: border-color .15s ease, background .15s ease;
}
.bar-cta:hover { border-color: var(--ink-3); background: var(--raise); }

/* ---- hero ---- */
.hero { padding: 74px 0 30px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 500;
  color: var(--ink-2);
  padding: 5px 12px 5px 10px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  background: var(--raise);
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--good); box-shadow: 0 0 0 3px color-mix(in srgb, var(--good) 22%, transparent); }
.hero h1 { margin-top: 22px; }
.hero .lede { margin-top: 20px; font-size: 1.16rem; color: var(--ink-2); max-width: 33em; }

form.signup { margin-top: 30px; display: flex; gap: 9px; flex-wrap: wrap; max-width: 460px; }
form.signup input {
  flex: 1 1 220px;
  font: inherit; font-size: 16px;
  padding: 13px 15px;
  border-radius: 11px;
  border: 1px solid var(--edge);
  background: var(--ground-2);
  color: var(--ink);
}
form.signup input::placeholder { color: var(--ink-3); }
form.signup input:focus-visible { outline: 2px solid var(--accent-b); outline-offset: 1px; border-color: transparent; }
.btn-primary {
  font: inherit; font-weight: 600; font-size: 1rem;
  color: #fff;
  padding: 13px 22px;
  border: 0; border-radius: 11px;
  background: var(--grad);
  background-size: 140% 140%;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .12s ease, filter .15s ease, opacity .15s ease;
}
.btn-primary:hover { filter: brightness(1.06); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { opacity: .6; cursor: default; }
.btn-primary:focus-visible { outline: 2px solid var(--accent-b); outline-offset: 2px; }
.form-note { margin-top: 12px; font-size: 0.82rem; color: var(--ink-3); }
.form-error { margin-top: 12px; font-size: 0.85rem; color: #dc2626; }
.form-done {
  margin-top: 30px;
  padding: 15px 17px;
  border: 1px solid color-mix(in srgb, var(--good) 40%, var(--edge));
  background: color-mix(in srgb, var(--good) 9%, transparent);
  border-radius: 12px;
  font-size: 0.95rem;
  color: var(--ink);
  max-width: 460px;
}

.trust { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 0.83rem; color: var(--ink-3); }
.trust span { display: inline-flex; align-items: center; gap: 7px; }
.trust svg { flex: none; }

/* ---- the checklist : the one object that gets a card ---- */
.ledger {
  margin: 46px 0 8px;
  border: 1px solid var(--edge);
  border-radius: 16px;
  background: var(--raise);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.ledger-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--edge-soft); }
.ledger-head .t { font-weight: 600; font-size: 0.95rem; }
.ledger-head .s { font-size: 0.8rem; color: var(--ink-3); }
.row { display: grid; grid-template-columns: 22px 1fr auto; align-items: center; gap: 13px; padding: 13px 20px; border-bottom: 1px solid var(--edge-soft); }
.row:last-child { border-bottom: 0; }
.row .n { font-family: "IBM Plex Mono", monospace; font-size: 0.78rem; color: var(--ink-3); text-align: center; }
.row .lbl { color: var(--ink-2); font-size: 0.95rem; }
.row .amt { font-family: "IBM Plex Mono", monospace; font-size: 0.95rem; color: var(--ink); letter-spacing: -0.01em; }
.row.settled { background: color-mix(in srgb, var(--good) 7%, transparent); }
.row.settled .lbl, .row.settled .amt { color: var(--ink); }
.row.settled .n { color: var(--good); }
.tick { width: 15px; height: 15px; display: block; margin: 0 auto; }
.ledger-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 15px 20px; background: var(--raise-strong); font-size: 0.9rem; }
.ledger-foot .zero { font-family: "IBM Plex Mono", monospace; font-weight: 500; color: var(--good); }

/* ---- sections ---- */
section.block { padding: 62px 0; border-top: 1px solid var(--edge-soft); }
section.block .col > .eyebrow { margin-bottom: 16px; }
section.block h2 { margin-bottom: 16px; }
section.block .intro { color: var(--ink-2); font-size: 1.08rem; max-width: 34em; }

ul.points { list-style: none; padding: 0; margin: 28px 0 0; display: flex; flex-direction: column; gap: 20px; }
ul.points li { display: grid; grid-template-columns: 20px 1fr; gap: 14px; }
ul.points li svg { margin-top: 4px; color: var(--accent-b); flex: none; }
ul.points .h { font-weight: 600; color: var(--ink); }
ul.points .d { color: var(--ink-2); font-size: 0.98rem; margin-top: 2px; }

.compare { margin-top: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 460px; }
.compare .c { border: 1px solid var(--edge); border-radius: 12px; padding: 14px 15px; background: var(--raise); }
.compare .k { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-3); }
.compare .v { font-family: "IBM Plex Mono", monospace; font-size: 1.15rem; margin-top: 6px; color: var(--ink); }
.compare .m { font-size: 0.8rem; color: var(--ink-2); margin-top: 3px; }

/* ---- closing ---- */
.closing { padding: 74px 0; border-top: 1px solid var(--edge-soft); text-align: center; }
.closing h2 { margin: 0 auto 20px; max-width: 14ch; }
.closing form.signup { margin-left: auto; margin-right: auto; }
.closing .form-note, .closing .trust { justify-content: center; }
.closing .form-done { margin-left: auto; margin-right: auto; }

/* ---- legal pages ---- */
.legal-hero { padding: 56px 0 20px; border-bottom: 1px solid var(--edge-soft); }
.legal-hero .updated { margin-top: 10px; font-size: 0.88rem; color: var(--ink-3); }
.legal-body { padding: 44px 0 80px; }
.legal-body .col { max-width: 700px; }
.legal-body h2 { font-size: 1.3rem; margin-top: 40px; margin-bottom: 12px; }
.legal-body h2:first-child { margin-top: 0; }
.legal-body h3 { font-size: 1rem; margin-top: 22px; margin-bottom: 8px; }
.legal-body p, .legal-body li { color: var(--ink-2); font-size: 0.98rem; }
.legal-body p + p { margin-top: 12px; }
.legal-body ul, .legal-body ol { padding-left: 22px; margin: 10px 0; display: flex; flex-direction: column; gap: 8px; }
.legal-body a.inline { color: var(--accent-b); text-decoration: underline; text-underline-offset: 2px; }
.legal-body strong { color: var(--ink); }
.legal-toc { margin: 26px 0 0; padding: 16px 18px; border: 1px solid var(--edge); border-radius: 12px; background: var(--raise); }
.legal-toc .k { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-3); margin-bottom: 10px; }
.legal-toc ol { margin: 0; padding-left: 18px; gap: 4px; }
.legal-toc a { color: var(--ink-2); text-decoration: none; font-size: 0.92rem; }
.legal-toc a:hover { color: var(--accent-b); text-decoration: underline; }
.callout {
  margin: 20px 0; padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--good) 35%, var(--edge));
  background: color-mix(in srgb, var(--good) 7%, transparent);
  border-radius: 12px;
  font-size: 0.92rem;
  color: var(--ink-2);
}
.callout strong { color: var(--ink); }

/* ---- footer (every page) ---- */
footer { border-top: 1px solid var(--edge); padding: 44px 0 60px; color: var(--ink-3); font-size: 0.86rem; }
footer .flinks { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-bottom: 22px; }
footer .flinks a { color: var(--ink-2); text-decoration: none; }
footer .flinks a:hover { color: var(--ink); text-decoration: underline; }
footer .legal-p { max-width: 62ch; line-height: 1.65; }
footer .legal-p + .legal-p { margin-top: 12px; }
footer .co { margin-top: 20px; color: var(--ink-3); }

@media (max-width: 620px) {
  body { font-size: 16px; }
  .hero { padding: 52px 0 20px; }
  .compare { grid-template-columns: 1fr; }
  .row { grid-template-columns: 20px 1fr auto; padding: 12px 16px; }
  .ledger-head, .ledger-foot { padding: 14px 16px; }
}

@media (prefers-reduced-motion: no-preference) {
  .reveal { transform: translateY(14px); animation: rise .55s cubic-bezier(.2, .7, .3, 1) forwards; }
  .reveal.d1 { animation-delay: .05s; }
  .reveal.d2 { animation-delay: .1s; }
  .reveal.d3 { animation-delay: .15s; }
  .reveal.d4 { animation-delay: .2s; }
  @keyframes rise { to { transform: none; } }
  .row .tick path { stroke-dasharray: 20; stroke-dashoffset: 20; animation: draw .4s ease forwards; }
  .row:nth-child(1) .tick path { animation-delay: .5s; }
  .row:nth-child(2) .tick path { animation-delay: .62s; }
  .row:nth-child(3) .tick path { animation-delay: .74s; }
  @keyframes draw { to { stroke-dashoffset: 0; } }
}