/* LanCall — lancall.app. One stylesheet, no external fonts, no scripts. Light + dark via prefers-color-scheme. */
:root {
  --indigo: #2F55E6; --teal: #19C6B0; --night: #0A0F2C;
  --grad: linear-gradient(135deg, var(--indigo), var(--teal));
  --ink: #141833; --muted: #4F5573; --bg: #F6F7FB; --card: #FFFFFF; --line: #E2E5F0;
  --link: #2448D6; --accent-soft: #EAF0FF; --warn-bg: #FFF7E6; --warn-line: #F2D29B;
  --radius: 18px; --shadow: 0 10px 30px rgba(20, 24, 51, .08);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #EEF0FA; --muted: #B4B9D3; --bg: #0C1024; --card: #151A36; --line: #262C52;
    --link: #93A8FF; --accent-soft: #1B2350; --warn-bg: #2A2312; --warn-line: #5A4A22;
    --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0; font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-wrap: break-word;
}
a { color: var(--link); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 3px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
svg { flex: none; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--card); color: var(--ink); padding: 10px 14px; border-radius: 10px; }
.skip:focus { left: 12px; }

/* header */
header.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; min-height: 62px; gap: 6px 16px; padding-top: 8px; padding-bottom: 8px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
nav.links { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 15px; }
nav.links a { color: var(--ink); text-decoration: none; opacity: .85; padding: 4px 0; }
nav.links a:hover { opacity: 1; text-decoration: underline; }
nav.links a[aria-current="page"] { opacity: 1; font-weight: 700; color: var(--link); }

/* hero: always dark, so white text keeps strong contrast in both modes */
.hero {
  color: #fff; padding: 72px 0 64px;
  background:
    radial-gradient(60% 80% at 12% 10%, rgba(47, 85, 230, .55), transparent 70%),
    radial-gradient(55% 75% at 92% 95%, rgba(25, 198, 176, .40), transparent 70%),
    var(--night);
}
.hero .wrap { display: grid; grid-template-columns: 1.25fr .75fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(32px, 5.4vw, 58px); line-height: 1.07; margin: 0 0 18px; font-weight: 850; letter-spacing: -.02em; }
.hero h1 .hl { background: linear-gradient(90deg, #8EA3FF, var(--teal)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: clamp(17px, 2.2vw, 20px); color: #DCE2FF; margin: 0 0 28px; max-width: 34em; }
.hero .appicon { justify-self: center; width: min(260px, 60vw); border-radius: 22.5%; box-shadow: 0 30px 70px rgba(0, 0, 0, .5), 0 0 0 1px rgba(255, 255, 255, .08); }
.cta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.pill { display: inline-flex; align-items: center; gap: 8px; padding: 12px 18px; border-radius: 999px; font-weight: 700; font-size: 15px; text-decoration: none; }
.pill.solid { background: #fff; color: var(--night); }
.pill.ghost { border: 1.5px solid rgba(255, 255, 255, .45); color: #fff; }
.pill.ghost:hover { background: rgba(255, 255, 255, .08); }
.hero .fine { font-size: 14px; color: #B9C2EE; margin: 14px 0 0; }

/* sections */
section.band { padding: 64px 0; scroll-margin-top: 64px; }
section.band.alt { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
section.band h2 { font-size: clamp(26px, 3.6vw, 36px); line-height: 1.2; margin: 0 0 10px; font-weight: 800; letter-spacing: -.01em; }
p.sub { color: var(--muted); font-size: 18px; margin: 0 0 32px; max-width: 42em; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps li { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.alt .steps li { background: var(--bg); }
.steps li::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--indigo); color: #fff; font-weight: 800; margin-bottom: 14px; box-shadow: inset 0 -4px 0 var(--teal); }
.steps h3, .feature h3 { margin: 0 0 6px; font-size: 18px; line-height: 1.3; }
.steps p, .feature p { margin: 0; color: var(--muted); font-size: 15.5px; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 16px; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.alt .feature { background: var(--bg); }
.feature .ico { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: var(--grad); color: #fff; margin-bottom: 12px; }

.limits { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.alt .box { background: var(--bg); }
.box h3 { margin: 0 0 8px; font-size: 18px; }
.box ul { margin: 0; padding-left: 20px; }
.box li { margin: 6px 0; }
.box.warn { background: var(--warn-bg); border-color: var(--warn-line); }

.price { display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: 32px; box-shadow: var(--shadow); }
.price .amount { font-size: clamp(40px, 7vw, 60px); font-weight: 850; letter-spacing: -.02em; line-height: 1; }
.price .amount small { display: block; font-size: 15px; font-weight: 600; color: var(--muted); letter-spacing: 0; margin-top: 8px; }
.price p { margin: 0 0 8px; }
.price .muted { color: var(--muted); font-size: 15px; }
.soon { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; background: var(--accent-soft); color: var(--link); font-weight: 700; font-size: 14px; margin-bottom: 12px; }

.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 900px; }
.gallery figure { margin: 0; }
.gallery img { width: 100%; border-radius: 28px; border: 1px solid var(--line); background: var(--card); box-shadow: var(--shadow); }
.gallery figcaption { text-align: center; color: var(--muted); font-size: 14px; margin-top: 10px; }

/* footer */
footer.site { border-top: 1px solid var(--line); padding: 32px 0 40px; color: var(--muted); font-size: 14px; }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 14px 24px; justify-content: space-between; align-items: center; }
footer.site nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
footer.site a { color: var(--muted); }
footer.site a:hover { color: var(--ink); }

/* legal / long-form pages */
article.doc { max-width: 70ch; margin: 0 auto; padding: 48px 20px 80px; font-size: 17px; }
article.doc h1 { font-size: clamp(30px, 5vw, 40px); line-height: 1.15; margin: 0 0 8px; letter-spacing: -.01em; }
article.doc .meta { color: var(--muted); margin: 0 0 28px; font-size: 15px; }
article.doc h2 { font-size: 23px; line-height: 1.3; margin: 40px 0 10px; scroll-margin-top: 90px; }
article.doc h3 { font-size: 18px; margin: 26px 0 6px; scroll-margin-top: 90px; }
article.doc li { margin: 6px 0; }
article.doc ul, article.doc ol { padding-left: 22px; }
article.doc code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; background: var(--accent-soft); padding: 1px 6px; border-radius: 6px; }
article.doc .summary { background: var(--accent-soft); border-radius: var(--radius); padding: 18px 22px; margin: 0 0 28px; }
article.doc .summary p { margin: 0 0 8px; }
article.doc .summary ul { margin: 0; }
article.doc .note { background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: 14px; padding: 14px 18px; }
article.doc nav.toc { border: 1px solid var(--line); border-radius: 14px; padding: 14px 20px; background: var(--card); font-size: 15.5px; }
article.doc nav.toc h2 { font-size: 15px; margin: 0 0 6px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
article.doc nav.toc ol { margin: 0; columns: 2 16ch; column-gap: 28px; }
article.doc table { border-collapse: collapse; width: 100%; font-size: 15.5px; margin: 12px 0; display: block; overflow-x: auto; }
article.doc th, article.doc td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
article.doc th { font-weight: 700; }

details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; margin: 0 0 10px; }
details summary { cursor: pointer; font-weight: 700; }
details[open] summary { margin-bottom: 6px; }
details p, details ul, details ol { margin: 8px 0 0; }

.center { text-align: center; }
.notfound img { width: 96px; margin: 32px auto 20px; border-radius: 22.5%; }

@media (max-width: 800px) {
  .hero { padding: 44px 0 48px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 28px; }
  .hero .appicon { order: -1; width: min(140px, 40vw); justify-self: start; }
  .steps, .limits { grid-template-columns: 1fr; }
  .price { grid-template-columns: 1fr; padding: 24px; gap: 16px; }
  section.band { padding: 48px 0; }
}
@media (max-width: 560px) {
  header.top { position: static; }
  .gallery { grid-template-columns: 1fr; max-width: 280px; margin: 0 auto; }
  nav.links { font-size: 14px; gap: 2px 14px; }
  article.doc { font-size: 16px; padding-top: 32px; }
}
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }