/* FROG website. Self-hosted fonts and no third-party requests, matching the app's privacy stance.
   Layout concept: the page reads like one focus session — the thesis, the compression, the finish —
   on the app's own warm paper and frog green, with one deep-green band for the privacy promise. */

@font-face { font-family: 'Bricolage Grotesque'; src: url('fonts/bricolage-grotesque.woff2') format('woff2'); font-weight: 200 800; font-display: swap; }
@font-face { font-family: 'Atkinson Hyperlegible'; src: url('fonts/atkinson-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Atkinson Hyperlegible'; src: url('fonts/atkinson-700.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url('fonts/plex-mono-300.woff2') format('woff2'); font-weight: 300; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url('fonts/plex-mono-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }

:root {
  --paper: #F7F6F3;
  --surface: #FFFFFF;
  --ink: #1B1C1A;
  --muted: #55554F;
  --line: #E3E0D9;
  --frog: #2E6A4E;
  --frog-ink: #FFFFFF;
  --frog-soft: #E4EEE7;
  --brick: #B1452F;
  --band: #1E4634;
  --band-ink: #F2F1EC;
  --band-muted: #BFD3C6;
  --device: #101512;

  --display: 'Bricolage Grotesque', 'Avenir Next', 'Segoe UI', system-ui, sans-serif;
  --body: 'Atkinson Hyperlegible', 'Segoe UI', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --step--1: clamp(0.84rem, 0.82rem + 0.1vw, 0.9rem);
  --step-0: clamp(1rem, 0.97rem + 0.15vw, 1.09rem);
  --step-1: clamp(1.2rem, 1.1rem + 0.4vw, 1.4rem);
  --step-2: clamp(1.5rem, 1.3rem + 0.9vw, 2rem);
  --step-3: clamp(2.1rem, 1.6rem + 2.2vw, 3.3rem);
  --step-4: clamp(2.7rem, 1.9rem + 3.6vw, 4.9rem);

  --wrap: 1120px;
  --radius: 18px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #111311; --surface: #191C1A; --ink: #ECEDE9; --muted: #B3B6AF; --line: #2A2E2B;
    --frog: #77C495; --frog-ink: #0C1811; --frog-soft: #1E3127; --brick: #E58571;
    --band: #17392A; --band-ink: #ECEDE9; --band-muted: #A9C7B4; --device: #050706;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #111311; --surface: #191C1A; --ink: #ECEDE9; --muted: #B3B6AF; --line: #2A2E2B;
  --frog: #77C495; --frog-ink: #0C1811; --frog-soft: #1E3127; --brick: #E58571;
  --band: #17392A; --band-ink: #ECEDE9; --band-muted: #A9C7B4; --device: #050706;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--frog); outline-offset: 3px; border-radius: 6px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 12px; border-radius: 8px; z-index: 10; }
.skip:focus { left: 12px; }

h1, h2, h3 { font-family: var(--display); font-weight: 650; letter-spacing: -0.025em; line-height: 1.04; margin: 0; text-wrap: balance; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); letter-spacing: -0.01em; line-height: 1.2; }
p { margin: 0; text-wrap: pretty; }
.lede { font-size: var(--step-1); color: var(--muted); line-height: 1.5; max-width: 36ch; }
.eyebrow { font: 500 var(--step--1)/1.3 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--frog); }
.muted { color: var(--muted); }

/* ---- Header ------------------------------------------------------------- */
.site-head { padding-block: 22px; }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 750 1.35rem/1 var(--display); letter-spacing: -0.03em; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.nav { display: flex; align-items: center; gap: clamp(12px, 3vw, 28px); font-size: var(--step--1); }
.nav a { text-decoration: none; color: var(--muted); }
.nav a:hover { color: var(--ink); }
.nav a.btn-primary, .nav a.btn-primary:hover { color: var(--frog-ink); }
.nav .hide-sm { display: inline; }
@media (max-width: 560px) { .nav .hide-sm { display: none; } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 22px; border-radius: 14px; border: 1px solid transparent;
  font: 700 var(--step-0)/1 var(--body); text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background-color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--frog); color: var(--frog-ink); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-quiet { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: var(--step--1); border-radius: 12px; }
.btn small { font-weight: 400; opacity: .8; }

/* ---- Hero --------------------------------------------------------------- */
.hero { padding-block: clamp(24px, 5vw, 64px) clamp(56px, 8vw, 104px); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(32px, 6vw, 80px); align-items: center; }
.hero h1 { font-size: var(--step-4); line-height: 0.98; letter-spacing: -0.035em; }
.hero h1 .line { display: block; }
.hero h1 .less { color: var(--frog); }
.hero .lede { margin-top: 22px; }
.hero .ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero .fine { margin-top: 14px; font-size: var(--step--1); color: var(--muted); }
.ticket {
  margin-top: 34px; display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px 14px;
  font: 300 var(--step--1)/1.4 var(--mono); color: var(--muted);
  border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line); padding-block: 10px;
}
.ticket b { font-weight: 500; color: var(--ink); }
.ticket s { text-decoration-thickness: 1.5px; }
.ticket .arrow { color: var(--frog); font-weight: 500; }
@media (max-width: 820px) { .hero .wrap { grid-template-columns: minmax(0, 1fr); } .hero .phone { max-width: 320px; margin-inline: auto; } }

/* ---- Phone frame ---------------------------------------------------------- */
.phone {
  position: relative; width: 100%; max-width: 360px; justify-self: center;
  padding: 11px; border-radius: 52px; background: var(--device);
  box-shadow: 0 1px 0 rgba(255,255,255,.06) inset, 0 40px 80px -30px rgba(20, 40, 30, .45), 0 18px 40px -20px rgba(0,0,0,.3);
}
.phone .screen { border-radius: 42px; overflow: hidden; background: var(--paper); aspect-ratio: 440 / 868; }
.phone .screen img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.phone.sm { max-width: 290px; border-radius: 44px; padding: 9px; }
.phone.sm .screen { border-radius: 36px; }

/* ---- Sections ------------------------------------------------------------- */
.section { padding-block: clamp(64px, 9vw, 120px); }
.section + .section { border-top: 1px solid var(--line); }
.section-head { display: grid; gap: 14px; max-width: 760px; margin-bottom: clamp(36px, 5vw, 56px); }
.section-head p { color: var(--muted); font-size: var(--step-1); line-height: 1.5; max-width: 52ch; }

.problem { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px); }
.problem p { color: var(--muted); }
.problem h3 { margin-bottom: 8px; }
@media (max-width: 760px) { .problem { grid-template-columns: minmax(0, 1fr); } }

/* Three steps: a real sequence, so they are numbered. */
.steps { display: grid; gap: clamp(72px, 10vw, 120px); }
.step { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 88px); align-items: center; }
.step:nth-child(even) .step-media { order: -1; }
.step-copy { display: grid; gap: 16px; align-content: start; min-width: 0; }
.step-num { font: 500 var(--step--1)/1 var(--mono); color: var(--frog); letter-spacing: .06em; }
.step-copy h2 { font-size: var(--step-3); }
.step-copy > p { color: var(--muted); font-size: var(--step-1); line-height: 1.5; max-width: 40ch; }
.step-copy ul { margin: 4px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.step-copy li { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 10px; color: var(--ink); }
.step-copy li::before { content: ''; width: 8px; height: 8px; margin: 9px 0 0 4px; border-radius: 50%; background: var(--frog); }
.step-media { display: grid; justify-items: center; min-width: 0; }
@media (max-width: 820px) { .step { grid-template-columns: minmax(0, 1fr); } .step:nth-child(even) .step-media { order: 0; } }

/* ---- Compression calculator (the signature element) ----------------------- */
.squeeze {
  background: var(--surface); border: 1px solid var(--line); border-radius: 24px;
  padding: clamp(20px, 3.5vw, 32px); display: grid; gap: 22px; width: 100%; max-width: 520px;
}
.squeeze label, .squeeze .label { font: 500 var(--step--1)/1.2 var(--mono); letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
.squeeze .row { display: grid; gap: 10px; }
.squeeze .est-out { font: 300 var(--step-2)/1 var(--mono); font-variant-numeric: tabular-nums; color: var(--ink); }
.squeeze input[type=range] { width: 100%; accent-color: var(--frog); height: 28px; }
.seg { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px; padding: 4px; border-radius: 14px; background: var(--paper); border: 1px solid var(--line); }
.seg button {
  appearance: none; border: 0; background: transparent; color: var(--muted); border-radius: 10px;
  min-height: 44px; font: 700 var(--step--1)/1.1 var(--body); cursor: pointer; display: grid; gap: 2px; place-content: center;
}
.seg button span { font: 300 0.75rem/1 var(--mono); }
.seg button[aria-checked="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.bars { display: grid; gap: 12px; }
.bar { display: grid; grid-template-columns: 74px minmax(0, 1fr) 76px; align-items: center; gap: 12px; font: 300 var(--step--1)/1 var(--mono); font-variant-numeric: tabular-nums; }
.bar .track { height: 14px; border-radius: 7px; background: repeating-linear-gradient(90deg, transparent 0 calc(var(--tick) - 1px), var(--line) calc(var(--tick) - 1px) var(--tick)); position: relative; }
.bar .fill { position: absolute; inset: 0 auto 0 0; border-radius: 7px; transition: width .45s cubic-bezier(.2,.8,.2,1); }
.bar.est .fill { background: var(--line); border: 1px solid color-mix(in srgb, var(--muted) 35%, transparent); }
.bar.sprint .fill { background: var(--frog); }
.bar .v { text-align: right; color: var(--ink); font-weight: 500; }
.verdict { font: 650 var(--step-2)/1.1 var(--display); letter-spacing: -0.02em; }
.verdict em { font-style: normal; color: var(--frog); }
.squeeze .note { font-size: var(--step--1); color: var(--muted); min-height: 1.6em; }

/* ---- Feature grid ----------------------------------------------------------- */
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.feature { background: var(--paper); padding: clamp(22px, 3vw, 32px); display: grid; gap: 10px; align-content: start; min-width: 0; }
.feature p { color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font: 500 0.78rem/1 var(--mono); padding: 7px 9px; border-radius: 8px; background: var(--frog-soft); color: var(--frog); }
.typed { font: 300 var(--step--1)/1.4 var(--mono); color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; overflow-wrap: anywhere; }
.over { font: 300 1.9rem/1 var(--mono); color: var(--brick); }
@media (max-width: 900px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .features { grid-template-columns: minmax(0, 1fr); } }

/* ---- Privacy band --------------------------------------------------------- */
.band { background: var(--band); color: var(--band-ink); padding-block: clamp(64px, 9vw, 112px); }
.band .wrap { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
.band h2 { font-size: var(--step-4); line-height: 0.98; }
.band p { color: var(--band-muted); font-size: var(--step-1); line-height: 1.5; }
.band ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 1px solid color-mix(in srgb, var(--band-ink) 18%, transparent); }
.band li { padding-block: 16px; border-bottom: 1px solid color-mix(in srgb, var(--band-ink) 18%, transparent); display: grid; gap: 4px; }
.band li b { font-family: var(--display); font-weight: 600; font-size: var(--step-1); letter-spacing: -0.01em; }
.band li span { color: var(--band-muted); }
.band a { color: var(--band-ink); }
@media (max-width: 820px) { .band .wrap { grid-template-columns: minmax(0, 1fr); } }

/* ---- Pricing --------------------------------------------------------------- */
.price { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 80px); align-items: center; }
.price-tag { font: 300 clamp(4.5rem, 3rem + 7vw, 8.5rem)/0.9 var(--display); letter-spacing: -0.05em; }
.price-tag sup { font-size: 0.42em; vertical-align: 0.95em; margin-right: 4px; }
.price-tag span { display: block; font: 600 var(--step-1)/1.3 var(--display); letter-spacing: -0.01em; margin-top: 14px; color: var(--muted); }
.price-card { display: grid; gap: 18px; }
.price-card ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.price-card li { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 10px; }
.price-card li::before { content: '✓'; color: var(--frog); font-weight: 700; }
.store-buttons { display: flex; flex-wrap: wrap; gap: 12px; }
@media (max-width: 760px) { .price { grid-template-columns: minmax(0, 1fr); } }

/* ---- FAQ --------------------------------------------------------------------- */
.faq { display: grid; gap: 0; border-top: 1px solid var(--line); max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 20px 40px 20px 0; position: relative; font: 600 var(--step-1)/1.3 var(--display); letter-spacing: -0.01em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 4px; top: 16px; font: 300 1.6rem/1 var(--mono); color: var(--frog); transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > div { padding: 0 0 22px; color: var(--muted); max-width: 64ch; display: grid; gap: 10px; }

/* ---- Footer ------------------------------------------------------------------ */
.site-foot { border-top: 1px solid var(--line); padding-block: 36px 48px; font-size: var(--step--1); color: var(--muted); }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: 14px 28px; justify-content: space-between; align-items: center; }
.site-foot nav { display: flex; flex-wrap: wrap; gap: 20px; }
.site-foot a { color: var(--muted); }

/* ---- Document pages (privacy, support) ------------------------------------- */
.doc { padding-block: clamp(32px, 6vw, 72px) clamp(64px, 8vw, 104px); }
.doc .wrap { max-width: 780px; }
.doc h1 { font-size: var(--step-3); margin-top: 10px; }
.doc .updated { margin-top: 14px; color: var(--muted); font: 300 var(--step--1)/1.4 var(--mono); }
.doc .summary { margin-top: 32px; padding: 22px 24px; border-radius: var(--radius); background: var(--frog-soft); display: grid; gap: 8px; }
.doc .summary p { color: var(--ink); }
.doc h2 { font-size: var(--step-2); margin-top: 48px; margin-bottom: 14px; }
.doc h3 { margin-top: 28px; margin-bottom: 8px; }
.doc p, .doc li { color: var(--ink); max-width: 68ch; }
.doc p + p { margin-top: 12px; }
.doc ul { padding-left: 1.2em; display: grid; gap: 8px; margin: 12px 0 0; }
.doc table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: var(--step--1); }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 12px 14px 12px 0; border-bottom: 1px solid var(--line); }
.doc th { font: 500 0.78rem/1.3 var(--mono); text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.table-scroll { overflow-x: auto; }
.contact-card { margin-top: 20px; padding: 22px 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); display: grid; gap: 12px; }
.email-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; }
.email { font: 500 var(--step-1)/1.2 var(--mono); user-select: all; overflow-wrap: anywhere; }