/* CheaperStack — design system */

:root {
  --bg: #fbfaf8;
  --surface: #ffffff;
  --surface-2: #f4f2ee;
  --ink: #15181c;
  --ink-2: #3b434c;
  --muted: #6b7480;
  --line: #e3e0da;
  --line-2: #cfcbc2;
  --accent: #0d6b52;
  --accent-ink: #0a5240;
  --accent-soft: #e7f2ee;
  --warn: #a34327;
  --warn-soft: #f9ece7;
  --gold: #8a6a12;
  --gold-soft: #f7f0dc;
  --radius: 10px;
  --maxw: 1080px;
  --readw: 720px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101315;
    --surface: #171b1e;
    --surface-2: #1e2327;
    --ink: #eef1f3;
    --ink-2: #c3cad1;
    --muted: #8e99a4;
    --line: #2a3035;
    --line-2: #3a4249;
    --accent: #4cc79f;
    --accent-ink: #7fe0be;
    --accent-soft: #14302a;
    --warn: #e08b6c;
    --warn-soft: #33211a;
    --gold: #d9b552;
    --gold-soft: #2e2716;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent-ink); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.05rem); margin-top: 2.2em; }
h3 { font-size: 1.2rem; margin-top: 1.8em; font-family: var(--sans); font-weight: 650; }

p { margin: 0 0 1.1em; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.read { max-width: var(--readw); }

/* ---------- header ---------- */

.site-head {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 20;
}
.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 62px;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--serif);
  font-size: 1.22rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.brand span { color: var(--accent); }
.nav { display: flex; gap: 20px; font-size: .93rem; flex-wrap: wrap; }
.nav a { color: var(--ink-2); text-decoration: none; }
.nav a:hover { color: var(--accent-ink); text-decoration: underline; }

/* ---------- disclosure ---------- */

.disclosure {
  background: var(--gold-soft);
  border: 1px solid var(--line-2);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 13px 16px;
  font-size: .89rem;
  color: var(--ink-2);
  margin: 0 0 26px;
}
.disclosure strong { color: var(--ink); }

/* ---------- hero ---------- */

.hero { padding: 54px 0 34px; }
.eyebrow {
  font-size: .76rem;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 14px;
}
.lede { font-size: 1.16rem; color: var(--ink-2); max-width: 62ch; }

.meta-row {
  display: flex;
  gap: 8px 18px;
  flex-wrap: wrap;
  font-size: .85rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
  margin: 26px 0 30px;
}
.meta-row b { color: var(--ink-2); font-weight: 600; }

/* ---------- answer box (AEO) ---------- */

.answer {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 0 0 30px;
}
.answer p:last-child { margin-bottom: 0; }
.answer .answer-q {
  font-size: .76rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent-ink);
  font-weight: 700;
  margin-bottom: 8px;
}

/* ---------- tables ---------- */

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  margin: 0 0 12px;
  -webkit-overflow-scrolling: touch;
}
table { border-collapse: collapse; width: 100%; min-width: 640px; font-size: .93rem; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th {
  font-size: .73rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
  background: var(--surface-2);
  white-space: nowrap;
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr.is-pick { background: var(--accent-soft); }
td .tool { font-weight: 650; color: var(--ink); }
td .note { display: block; color: var(--muted); font-size: .85rem; margin-top: 2px; }
.price { font-family: var(--mono); font-size: .9rem; white-space: nowrap; }
.price.high { color: var(--warn); }
.price.low { color: var(--accent-ink); font-weight: 600; }
.yes { color: var(--accent-ink); font-weight: 650; }
.no { color: var(--muted); }
.tbl-note { font-size: .82rem; color: var(--muted); margin: 0 0 30px; }

/* ---------- cards ---------- */

.grid { display: grid; gap: 14px; margin: 24px 0 8px; }
.grid.c3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid.c2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: border-color .15s ease, transform .15s ease;
}
a.card:hover { border-color: var(--accent); transform: translateY(-1px); }
.card h3 { margin: 0 0 6px; font-size: 1.03rem; }
.card p { margin: 0; font-size: .89rem; color: var(--muted); }
.card .kicker {
  font-size: .7rem; letter-spacing: .11em; text-transform: uppercase;
  color: var(--accent); font-weight: 700; margin: 0 0 8px;
}

/* ---------- screenshot slot ---------- */

figure { margin: 26px 0; }
figure img { border: 1px solid var(--line-2); border-radius: var(--radius); }
.shot-placeholder {
  border: 1px dashed var(--line-2);
  border-radius: var(--radius);
  background: var(--surface-2);
  padding: 34px 20px;
  text-align: center;
  color: var(--muted);
  font-size: .87rem;
  font-family: var(--mono);
}
figcaption { font-size: .82rem; color: var(--muted); margin-top: 8px; }

/* ---------- email capture ---------- */

.capture {
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  padding: 26px 24px;
  margin: 38px 0;
}
.capture h3 { margin-top: 0; font-family: var(--serif); font-size: 1.35rem; font-weight: 600; }
.capture p { font-size: .93rem; color: var(--ink-2); }
.capture form { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.capture input[type=email] {
  flex: 1 1 240px;
  padding: 11px 13px;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
  font-size: .95rem;
}
.capture input[type=email]:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.btn {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}
.btn:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: #fff; }
.btn.ghost { background: transparent; color: var(--accent-ink); }
.btn.ghost:hover { background: var(--accent-soft); color: var(--accent-ink); }
.fineprint { font-size: .79rem; color: var(--muted); margin: 10px 0 0; }

/* ---------- calculator ---------- */

.calc {
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  padding: 24px;
  margin: 30px 0;
}
.calc h3 { margin-top: 0; }
.calc-list { display: grid; gap: 9px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); margin: 16px 0 20px; }
.calc-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg); font-size: .91rem; cursor: pointer;
}
.calc-item:hover { border-color: var(--line-2); }
.calc-item input { accent-color: var(--accent); width: 16px; height: 16px; flex: none; }
.calc-item .p { margin-left: auto; font-family: var(--mono); font-size: .84rem; color: var(--muted); white-space: nowrap; }
.calc-out {
  display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border-top: 1px solid var(--line); padding-top: 18px;
}
.calc-out div span {
  display: block; font-size: .73rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted); font-weight: 700; margin-bottom: 4px;
}
.calc-out div b { font-family: var(--mono); font-size: 1.5rem; font-weight: 600; }
.calc-out .now b { color: var(--warn); }
.calc-out .lean b { color: var(--accent-ink); }
.calc-out .save b { color: var(--ink); }

/* ---------- callouts / faq ---------- */

.callout {
  border-left: 3px solid var(--line-2);
  padding: 4px 0 4px 18px;
  margin: 26px 0;
  color: var(--ink-2);
  font-size: 1.02rem;
}
.faq { border-top: 1px solid var(--line); margin-top: 12px; }
.faq details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 650; font-size: 1rem; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "+ "; color: var(--accent); font-family: var(--mono); }
.faq details[open] summary::before { content: "− "; }
.faq details p { margin: 12px 0 0; font-size: .95rem; color: var(--ink-2); }

.verify {
  display: inline-block; font-family: var(--mono); font-size: .72rem;
  background: var(--warn-soft); color: var(--warn); border: 1px solid var(--warn);
  border-radius: 4px; padding: 1px 6px; margin-left: 6px; vertical-align: middle;
}

/* ---------- footer ---------- */

.site-foot {
  border-top: 1px solid var(--line);
  margin-top: 64px;
  padding: 34px 0 48px;
  background: var(--surface);
  font-size: .88rem;
  color: var(--muted);
}
.foot-cols { display: grid; gap: 26px; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); margin-bottom: 26px; }
.foot-cols h4 { font-family: var(--sans); font-size: .73rem; letter-spacing: .11em; text-transform: uppercase; color: var(--ink-2); margin: 0 0 10px; }
.foot-cols ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.foot-cols a { color: var(--muted); text-decoration: none; }
.foot-cols a:hover { color: var(--accent-ink); text-decoration: underline; }
.foot-legal { border-top: 1px solid var(--line); padding-top: 18px; font-size: .82rem; }

/* ---------- consent banner ---------- */

.consent {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  max-width: 560px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(0, 0, 0, .14);
  padding: 16px 18px;
  font-size: .9rem;
}
.consent p { margin: 0 0 12px; color: var(--ink-2); }
.consent-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.consent-actions .btn { flex: 1 1 120px; }

/* ---------- contact form ---------- */

.contact-form { display: grid; gap: 18px; margin: 26px 0 10px; }
.contact-form label { display: block; font-weight: 650; font-size: .92rem; margin-bottom: 6px; }
.contact-form input[type=email],
.contact-form textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: .96rem;
}
.contact-form textarea { min-height: 190px; resize: vertical; }
.contact-form input:focus,
.contact-form textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.contact-form .btn { justify-self: start; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-status { padding: 13px 16px; border-radius: var(--radius); border: 1px solid; font-size: .94rem; margin: 0 0 18px; }
.form-status.ok { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
.form-status.err { background: var(--warn-soft); border-color: var(--warn); color: var(--warn); }

.aff { color: var(--muted); font-size: .82em; white-space: nowrap; }

.disclosure {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 0 0 16px;
  font-size: .88rem;
  color: var(--ink-2);
}
.disclosure p { margin: 0; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip {
  position: absolute; left: -9999px;
  background: var(--accent); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0; z-index: 50;
}
.skip:focus { left: 0; top: 0; }

@media (max-width: 640px) {
  body { font-size: 16px; }
  .hero { padding: 34px 0 22px; }
  .nav { gap: 14px; font-size: .88rem; }
}

pre { background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; overflow-x: auto; margin: 16px 0; font-size: 0.85rem; line-height: 1.5; }
pre code { font-family: var(--mono); background: none; padding: 0; }