/* ===========================================================
   KwarTracker landing page — "Kwarta" direction (dark, tool-led)
   Brand tokens mirror the app (src/core/theme/tokens.ts)
   =========================================================== */
:root {
  --primary: #0FB5A1;
  --primary-dark: #0C9385;
  --mint: #2FD4C0;
  --mint-hi: #5BE6D4;
  --mint-soft: #7DEBDC;
  --income: #16C098;
  --expense: #FF6F5E;

  --ink-0: #07100E;   /* page black-green */
  --ink-1: #0B1614;   /* raised band */
  --ink-2: #0E1512;   /* card on light */
  --ink-3: #050B0A;   /* footer */
  --light: #F6F8F7;
  --surface: #FFFFFF;
  --line-dark: rgba(255, 255, 255, 0.09);
  --line-light: #E7EAE9;

  --text: #FFFFFF;
  --text-dim: rgba(255, 255, 255, 0.62);
  --text-faint: rgba(255, 255, 255, 0.42);
  --ink: #1B1B2F;
  --muted: #6E6E84;

  --maxw: 1120px;
  --pad: 40px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--ink-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--mint); }
code { background: rgba(255,255,255,0.12); padding: 2px 8px; border-radius: 6px; font-size: .95em; color: #EAFFFB; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }
.eyebrow { display: inline-block; font-size: 12.5px; font-weight: 600; letter-spacing: 1.4px; text-transform: uppercase; color: var(--mint); margin-bottom: 12px; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-weight: 600; font-size: 16px; line-height: 1;
  padding: 17px 30px; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; white-space: nowrap;
  transition: background .15s ease, color .15s ease, border-color .15s ease, transform .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn .ico { width: 18px; height: 18px; }
.btn-sm { padding: 11px 20px; font-size: 14px; }
.btn-mint { background: var(--mint); color: #06231F; box-shadow: 0 18px 46px rgba(47,212,192,0.34); }
.btn-mint:hover { background: var(--mint-hi); color: #06231F; }
.btn-outline { border-color: rgba(255,255,255,0.18); color: #fff; }
.btn-outline:hover { border-color: var(--mint); color: var(--mint); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7,16,14,0.82);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: #fff; }
.brand img { width: 32px; height: 32px; border-radius: 9px; }
.brand-name { font-size: 18px; letter-spacing: -0.3px; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a { font-size: 15px; font-weight: 500; color: var(--text-dim); }
.nav-links a:hover { color: #fff; }
.nav-links a.btn-mint { color: #06231F; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #fff; border-radius: 2px; margin: 4px 0; transition: .25s; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden; padding: 96px 0 0;
  background: radial-gradient(120% 90% at 50% -10%, rgba(15,181,161,0.30), rgba(7,16,14,0) 62%), var(--ink-0);
}
.hero-inner { max-width: 1000px; margin: 0 auto; padding: 0 var(--pad); text-align: center; }
.tagpill {
  display: inline-flex; align-items: center; gap: 9px;
  border: 1px solid rgba(47,212,192,0.35); background: rgba(47,212,192,0.10);
  color: var(--mint-soft); font-size: 13px; font-weight: 600;
  padding: 8px 16px; border-radius: 999px; margin-bottom: 30px;
}
.hero h1 { font-size: clamp(42px, 6.2vw, 74px); line-height: 0.98; letter-spacing: -2.8px; font-weight: 700; margin: 0 0 22px; }
.hero h1 em { font-style: normal; color: var(--mint); }
.hero-lead { font-size: 19px; color: var(--text-dim); max-width: 56ch; margin: 0 auto 34px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 14px; }
.micro { font-size: 13.5px; color: var(--text-faint); margin: 0; }

/* screenshot rail */
.rail { margin-top: 62px; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.rail-track { display: flex; gap: 26px; width: max-content; padding-bottom: 70px; animation: railscroll 46s linear infinite; }
.rail-track img { width: 236px; border-radius: 26px; border: 1px solid rgba(255,255,255,0.12); box-shadow: 0 26px 60px rgba(0,0,0,0.55); }
.rail:hover .rail-track { animation-play-state: paused; }
@keyframes railscroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- Section shells ---------- */
.band { padding: 90px 0; }
.band-raised { background: var(--ink-1); border-top: 1px solid rgba(255,255,255,0.06); }
.band-light { background: var(--light); color: var(--ink); }
.band-light h2, .band-light h3 { color: var(--ink); }
.band-light p { color: var(--muted); }
.section-head { text-align: center; max-width: 620px; margin: 0 auto 46px; }
.band h2 { font-size: clamp(30px, 4vw, 44px); line-height: 1.08; letter-spacing: -1.4px; margin: 0 0 14px; font-weight: 700; }
.band-head-split { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-bottom: 44px; }
.band-head-split h2 { max-width: 15ch; margin: 0; }
.band-head-split p { font-size: 16px; max-width: 32ch; margin: 0; }

/* ---------- Payoff planner ---------- */
.planner {
  display: grid; grid-template-columns: 1fr 300px; gap: 56px; align-items: center;
  background: linear-gradient(150deg, rgba(47,212,192,0.10), rgba(255,255,255,0.02));
  border: 1px solid var(--line-dark); border-radius: 26px; padding: 44px 48px;
}
.planner-meta { font-size: 14px; color: var(--text-dim); margin: 0 0 10px; }
.planner-value { display: flex; align-items: baseline; gap: 12px; margin-bottom: 18px; }
.planner-value .label { font-size: 15px; color: var(--text-dim); }
.planner-value .amount { font-size: 32px; font-weight: 700; color: var(--mint); letter-spacing: -1px; }
.planner-value .per { font-size: 15px; color: var(--text-faint); }
.planner input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; background: transparent; margin: 0 0 34px; }
.planner input[type=range]::-webkit-slider-runnable-track { height: 6px; border-radius: 999px; background: rgba(15,181,161,0.22); }
.planner input[type=range]::-moz-range-track { height: 6px; border-radius: 999px; background: rgba(15,181,161,0.22); }
.planner input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 26px; height: 26px; margin-top: -10px; border-radius: 50%; background: var(--primary); border: 4px solid #fff; box-shadow: 0 6px 18px rgba(15,181,161,0.5); cursor: pointer; }
.planner input[type=range]::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: var(--primary); border: 4px solid #fff; cursor: pointer; }
.planner-out { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.stat { border: 1px solid rgba(255,255,255,0.1); border-radius: 16px; padding: 20px; }
.stat .k { font-size: 12px; text-transform: uppercase; letter-spacing: .9px; color: rgba(255,255,255,0.45); margin-bottom: 6px; }
.stat .v { font-size: 26px; font-weight: 700; letter-spacing: -.8px; color: #fff; }
.stat .v.mint { color: var(--mint); }

/* ---------- Phone frame ---------- */
.phone {
  position: relative; width: 270px; aspect-ratio: 9 / 19.5;
  background: #0E0E14; border-radius: 42px; padding: 10px;
  box-shadow: 0 30px 60px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.12);
}
.phone-notch { position: absolute; top: 10px; left: 50%; transform: translateX(-50%); width: 114px; height: 23px; background: #0E0E14; border-radius: 0 0 16px 16px; z-index: 2; }
.phone img { width: 100%; height: 100%; object-fit: cover; border-radius: 33px; }
.phone-wrap { display: flex; justify-content: center; }

/* ---------- Feature grid ---------- */
.feature-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.card { background: var(--surface); border: 1px solid var(--line-light); border-radius: 22px; overflow: hidden; }
.card-tall { grid-row: span 2; display: flex; flex-direction: column; }
.card img { width: 100%; height: 150px; object-fit: cover; object-position: center top; background: #0E0E14; }
.card-tall img { height: 280px; }
.card-body { padding: 22px 24px 26px; }
.card-tall .card-body { padding: 28px 30px 32px; }
.card h3 { font-size: 18px; margin: 0 0 6px; letter-spacing: -.3px; }
.card-tall h3 { font-size: 22px; margin-bottom: 8px; letter-spacing: -.4px; }
.card p { font-size: 14.5px; margin: 0; }
.card-tall p { font-size: 15.5px; }

.feature-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.card-dark { background: var(--ink-2); border-radius: 22px; padding: 34px 36px; color: #fff; }
.card-dark h3 { font-size: 22px; margin: 0 0 10px; letter-spacing: -.4px; color: #fff; }
.card-dark p { font-size: 15.5px; color: var(--text-dim); margin: 0 0 22px; }
.theme-pair { display: flex; gap: 14px; }
.theme-pair img { width: 50%; border-radius: 14px; border: 1px solid rgba(255,255,255,0.14); }
.card-pdf { background: var(--surface); border: 1px solid var(--line-light); border-radius: 22px; padding: 34px 36px; display: flex; flex-direction: column; justify-content: space-between; }
.card-pdf h3 { font-size: 22px; margin: 0 0 10px; letter-spacing: -.4px; }
.card-pdf p { font-size: 15.5px; margin: 0 0 22px; }
.card-pdf code { background: #EFF5F4; color: var(--ink); }
.doc { border: 1px solid var(--line-light); border-radius: 14px; padding: 18px; }
.doc-head { border-bottom: 3px solid var(--primary); padding-bottom: 10px; margin-bottom: 12px; }
.doc-head .brand-line { display: block; color: var(--primary); font-weight: 700; font-size: 13px; }
.doc-head .title-line { display: block; font-weight: 700; font-size: 17px; color: var(--ink); }
.doc-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.doc-cards div { border: 1px solid #ECECF2; border-radius: 9px; padding: 8px; }
.doc-cards small { display: block; color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .4px; }
.doc-cards b { font-size: 13px; }
.pos { color: var(--income); }
.neg { color: var(--expense); }

/* ---------- Trust ---------- */
.trust-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.trust-list { display: flex; flex-direction: column; gap: 14px; }
.trust-item { border: 1px solid rgba(255,255,255,0.1); border-radius: 16px; padding: 22px 24px; }
.trust-item .t { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 4px; }
.trust-item .d { font-size: 14.5px; color: rgba(255,255,255,0.58); }
.link-underline { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; color: var(--mint); border-bottom: 1px solid rgba(47,212,192,0.5); padding-bottom: 2px; }
.link-underline:hover { color: var(--mint-soft); }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 820px; margin: 0 auto; padding: 0 var(--pad); }
.faq details { border-bottom: 1px solid rgba(255,255,255,0.09); padding: 6px 0; }
.faq summary {
  cursor: pointer; list-style: none; padding: 16px 0; font-weight: 600; font-size: 17px; color: #fff;
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 24px; font-weight: 400; color: var(--mint); transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { margin: 0 0 18px; color: var(--text-dim); font-size: 15.5px; }

/* ---------- CTA + footer ---------- */
.cta {
  background: radial-gradient(90% 140% at 50% 0%, rgba(15,181,161,0.34), rgba(7,16,14,0) 65%), var(--ink-0);
  padding: 96px var(--pad); text-align: center;
}
.cta h2 { font-size: clamp(34px, 4.6vw, 50px); line-height: 1.05; letter-spacing: -1.8px; margin: 0 0 16px; font-weight: 700; }
.cta p { font-size: 18px; color: var(--text-dim); margin: 0 0 32px; }
.site-footer { background: var(--ink-3); color: #8C9B98; padding: 44px var(--pad); border-top: 1px solid rgba(255,255,255,0.06); }
.footer-inner { max-width: var(--maxw); margin: 0 auto; display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; font-size: 14px; }
.footer-inner .brand-name { color: #fff; font-weight: 700; font-size: 17px; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { color: #8C9B98; }
.footer-links a:hover { color: #fff; }
.copyright { color: #5E6C69; font-size: 13px; }
.copyright a { color: #5E6C69; }
.copyright a:hover { color: #fff; }

/* ---------- Legal / privacy page ---------- */
.legal { padding: 60px 0 92px; background: radial-gradient(100% 60% at 50% -10%, rgba(15,181,161,0.18), rgba(7,16,14,0) 60%), var(--ink-0); }
.legal-inner { max-width: 760px; margin: 0 auto; padding: 0 var(--pad); }
.legal-back { display: inline-block; font-weight: 600; font-size: 14px; color: var(--mint); margin-bottom: 30px; }
.legal h1 { font-size: clamp(34px, 5vw, 52px); line-height: 1.04; letter-spacing: -1.8px; margin: 0 0 8px; }
.legal-meta { color: var(--text-faint); font-size: 14px; margin: 0 0 36px; }
.legal-short {
  background: linear-gradient(150deg, rgba(47,212,192,0.12), rgba(255,255,255,0.02));
  border: 1px solid rgba(47,212,192,0.28); border-radius: 20px; padding: 30px 32px; margin-bottom: 40px;
}
.legal-short p { margin: 0; font-size: 17px; color: rgba(255,255,255,0.86); }
.legal h2 { font-size: 22px; letter-spacing: -0.4px; margin: 38px 0 10px; font-weight: 600; }
.legal p, .legal li { font-size: 16px; color: var(--text-dim); }
.legal strong { color: #fff; }
.legal ul { padding-left: 22px; margin: 0; }
.legal li { margin-bottom: 10px; }
.legal a { color: var(--mint); font-weight: 500; }
.legal a:hover { color: var(--mint-soft); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  :root { --pad: 24px; }
  .planner { grid-template-columns: 1fr; gap: 40px; padding: 32px 28px; }
  .planner .phone-wrap { order: -1; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .card-tall { grid-row: auto; grid-column: span 2; }
  .card-tall img { height: 220px; }
  .trust-grid { grid-template-columns: 1fr; gap: 36px; }
  .band-head-split { flex-direction: column; align-items: flex-start; gap: 16px; }
  .band-head-split h2, .band-head-split p { max-width: none; }

  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; inset: 76px 0 auto 0; flex-direction: column; align-items: stretch; gap: 6px;
    background: var(--ink-1); padding: 18px 24px 26px; border-bottom: 1px solid var(--line-dark);
    transform: translateY(-140%); transition: transform .28s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 12px 4px; font-size: 16px; }
  .nav-links a.btn-mint { justify-content: center; margin-top: 6px; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
}
@media (max-width: 640px) {
  .band { padding: 64px 0; }
  .hero { padding: 64px 0 0; }
  .hero h1 { letter-spacing: -1.4px; }
  .planner-out { grid-template-columns: 1fr; }
  .feature-grid, .feature-duo { grid-template-columns: 1fr; }
  .card-tall { grid-column: auto; }
  .rail-track img { width: 180px; }
  .cta { padding: 64px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
}