/* SignDesk landing — ugyanazok a színek és betűk, mint az alkalmazásban (frontend/src/index.css). */
:root {
  --bg: #f4f2ec;
  --surface: #ffffff;
  --side: #fbfaf7;
  --ink: #1b1e23;
  --muted: #565c66;
  --line: #e2ded4;
  --accent: #0e5a5e;
  --accent-strong: #083e41;
  --accent-soft: #e3efee;
  --amber: #8a4206;
  --amber-soft: #fcefd9;
  --good: #1f6b3a;
  --good-soft: #e4f2e8;
  --chip: #eeebe3;
  --shadow: 0 1px 2px rgba(27, 30, 35, .05), 0 8px 24px rgba(27, 30, 35, .06);
  --radius: 14px;
  --max: 1160px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a;
    --surface: #1c2024;
    --side: #181b1f;
    --ink: #eceae4;
    --muted: #a5abb3;
    --line: #2d3238;
    --accent: #4fb3b0;
    --accent-strong: #7dd0cc;
    --accent-soft: #1d3334;
    --amber: #f0b25e;
    --amber-soft: #3a2c17;
    --good: #6ccf8b;
    --good-soft: #1b3324;
    --chip: #262a2f;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: var(--accent); }
a:hover { color: var(--accent-strong); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
code, .mono { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .9em; }
h1, h2, h3 { line-height: 1.2; margin: 0; letter-spacing: -.01em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.1rem; }
p { margin: 0; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 12px; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
section { padding: 88px 0; }
.section-head { max-width: 760px; margin-bottom: 40px; display: flex; flex-direction: column; gap: 12px; }
.eyebrow { font-family: "IBM Plex Mono", monospace; font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.lead { font-size: 1.15rem; color: var(--muted); }

/* --- fejléc --- */
.top { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.1rem; }
.brand svg { width: 32px; height: 32px; }
.brand small { display: block; font-weight: 400; font-size: .72rem; color: var(--muted); margin-top: -3px; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--muted); text-decoration: none; font-size: .95rem; font-weight: 500; }
.nav a:hover { color: var(--ink); }
@media (max-width: 880px) { .nav { display: none; } }

/* --- gombok --- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 48px; padding: 0 22px; border-radius: 10px; font-weight: 600; font-size: 1rem; text-decoration: none; border: 1px solid transparent; transition: background .15s, border-color .15s; white-space: nowrap; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-strong); color: #fff; }
@media (prefers-color-scheme: dark) { .btn-primary, .btn-primary:hover { color: #0b1415; } }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--ink); }
.btn-sm { height: 40px; padding: 0 16px; font-size: .95rem; }
.top .btn { margin-left: 8px; }
@media (max-width: 880px) { .top .btn { margin-left: auto; } }

/* --- hero --- */
.hero { padding: 72px 0 64px; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 960px) { .hero .wrap { grid-template-columns: 1fr; gap: 40px; } }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 700; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { margin: 20px 0 28px; max-width: 580px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; background: var(--chip); color: var(--muted); font-size: .85rem; font-weight: 500; }
.badge svg { width: 14px; height: 14px; color: var(--good); }

/* --- „képernyő”-mockupok --- */
.screen { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; font-size: 13px; line-height: 1.45; }
.screen-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: var(--side); border-bottom: 1px solid var(--line); }
.screen-bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--line); display: block; }
.screen-bar span { margin-left: 8px; font-family: "IBM Plex Mono", monospace; font-size: 11px; color: var(--muted); }
.demo-strip { background: var(--amber-soft); color: var(--amber); text-align: center; font-size: 11px; font-weight: 600; padding: 4px; }
.app { display: grid; grid-template-columns: 150px 1fr; min-height: 330px; }
.app aside { background: var(--side); border-right: 1px solid var(--line); padding: 12px 10px; display: flex; flex-direction: column; gap: 3px; }
.app aside b { font-size: 12px; display: flex; align-items: center; gap: 6px; margin-bottom: 10px; }
.app aside b i { width: 18px; height: 18px; border-radius: 5px; background: var(--accent); display: inline-block; }
.app aside div { padding: 6px 8px; border-radius: 6px; color: var(--muted); font-size: 12px; }
.app aside div.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.app main { padding: 14px 16px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.app h4 { margin: 0; font-size: 15px; }
.card { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; background: var(--surface); }
.row { display: flex; align-items: center; gap: 10px; justify-content: space-between; }
.chip { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; background: var(--chip); color: var(--muted); white-space: nowrap; }
.chip.ok { background: var(--good-soft); color: var(--good); }
.chip.acc { background: var(--accent-soft); color: var(--accent); }
.chip.warn { background: var(--amber-soft); color: var(--amber); }
.mini-btn { background: var(--accent); color: #fff; border-radius: 7px; padding: 5px 10px; font-weight: 600; font-size: 12px; white-space: nowrap; }
@media (prefers-color-scheme: dark) { .mini-btn { color: #0b1415; } }
.muted { color: var(--muted); }
.hash { font-family: "IBM Plex Mono", monospace; font-size: 10.5px; color: var(--muted); word-break: break-all; }
@media (max-width: 520px) { .app { grid-template-columns: 1fr; } .app aside { display: none; } }

/* --- kártyarácsok --- */
.grid { display: grid; gap: 18px; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 960px) { .g3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .g3, .g2 { grid-template-columns: 1fr; } }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 10px; }
.tile p { color: var(--muted); font-size: .97rem; }
.ico { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: flex; align-items: center; justify-content: center; }
.ico svg { width: 22px; height: 22px; }

/* --- probléma/megoldás --- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 800px) { .split { grid-template-columns: 1fr; } }
.split .tile ul { margin: 0; padding-left: 20px; color: var(--muted); display: flex; flex-direction: column; gap: 6px; }
.split .tile.good { border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); }

/* --- sávok --- */
.band { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.band-dark { background: var(--accent-strong); color: #eef6f5; border: 0; }
@media (prefers-color-scheme: dark) { .band-dark { background: #0d2627; } }
.band-dark .eyebrow { color: #9fd6d2; }
.band-dark .lead, .band-dark .tile p { color: #c5dcda; }
.band-dark .tile { background: rgba(255, 255, 255, .06); border-color: rgba(255, 255, 255, .14); }
.band-dark .ico { background: rgba(255, 255, 255, .1); color: #bfe6e3; }
.band-dark code { color: #fff; }

/* --- lépések --- */
.steps { counter-reset: s; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 36px; }
@media (max-width: 960px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step { counter-increment: s; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.step::before { content: counter(s); display: inline-flex; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 700; align-items: center; justify-content: center; margin-bottom: 10px; }
@media (prefers-color-scheme: dark) { .step::before { color: #0b1415; } }
.step p { color: var(--muted); font-size: .95rem; margin-top: 6px; }
.flow { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.flow svg { display: block; width: 100%; height: auto; }

/* --- képernyő-galéria --- */
.shots { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
@media (max-width: 860px) { .shots { grid-template-columns: 1fr; } }
.shot figcaption { margin-top: 10px; font-size: .92rem; color: var(--muted); }
.shot figure { margin: 0; }

/* --- demo --- */
.demo-box { display: grid; grid-template-columns: 1.1fr 1fr; gap: 28px; align-items: start; }
@media (max-width: 900px) { .demo-box { grid-template-columns: 1fr; } }
.cred { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 14px; }
.cred dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; margin: 0; }
.cred dt { color: var(--muted); }
.cred dd { margin: 0; font-family: "IBM Plex Mono", monospace; font-weight: 600; }
.personas { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
@media (max-width: 520px) { .personas { grid-template-columns: 1fr; } }
.persona { display: flex; gap: 10px; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.persona .av { flex: none; width: 36px; height: 36px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: .85rem; display: flex; align-items: center; justify-content: center; }
.persona b { display: block; font-size: .95rem; }
.persona span { font-size: .85rem; color: var(--muted); line-height: 1.4; display: block; }
.persona em { font-style: normal; color: var(--accent); font-weight: 600; font-size: .78rem; }
.note { font-size: .9rem; color: var(--muted); }

/* --- technika --- */
.stack { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 860px) { .stack { grid-template-columns: repeat(2, 1fr); } }
.stack div { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.stack b { display: block; }
.stack span { font-size: .88rem; color: var(--muted); }

/* --- GYIK --- */
.faq { max-width: 860px; display: flex; flex-direction: column; gap: 10px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 0 20px; }
.faq summary { cursor: pointer; font-weight: 600; padding: 16px 0; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: "IBM Plex Mono", monospace; color: var(--accent); font-size: 1.2rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--muted); padding-bottom: 16px; }
.faq details p + p { margin-top: -6px; }

/* --- lábléc --- */
.cta-band { text-align: center; }
.cta-band .cta { justify-content: center; margin-top: 26px; }
footer { border-top: 1px solid var(--line); padding: 32px 0 40px; color: var(--muted); font-size: .9rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; }
footer a { color: var(--muted); }
.flow { color: var(--ink); }