/* relaygoo.com: the public pages (home, terms, privacy), Greek and English. No scripts, no fonts or images from
   elsewhere: the Content-Security-Policy (infra/Caddyfile) allows only this file and inline SVG. */
:root {
  --bg: #f7f5f0;
  --bg-2: #ede9e0;
  --card: #fffdf9;
  --line: #e4dfd3;
  --tx: #101828;
  --tx-2: #475467;
  --tx-3: #667085;
  --acc: #2456c8;
  --acc-tx: #ffffff;
  --warm: #f2994a;
  --ink: #101828;
  --ink-tx: #f7f5f0;
  --ink-2: #c9d2e0;
  --ok: #1f7a4d;
  --r: 18px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1422;
    --bg-2: #131b2c;
    --card: #182235;
    --line: #26324a;
    --tx: #eef1f6;
    --tx-2: #b4bfd0;
    --tx-3: #8d99ad;
    --acc: #7aa2ff;
    --acc-tx: #0e1422;
    --ink: #1b2740;
    --ink-tx: #f7f5f0;
    --ink-2: #c9d2e0;
    --ok: #5fd39a;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1422; --bg-2: #131b2c; --card: #182235; --line: #26324a; --tx: #eef1f6; --tx-2: #b4bfd0; --tx-3: #8d99ad;
  --acc: #7aa2ff; --acc-tx: #0e1422; --ink: #1b2740; --ink-tx: #f7f5f0; --ink-2: #c9d2e0; --ok: #5fd39a;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--tx); font: 16px/1.6 var(--font); overflow-x: hidden; }
img, svg { max-width: 100%; }
a { color: var(--acc); }
a:hover { text-decoration-thickness: 2px; }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
:focus-visible { outline: 3px solid var(--warm); outline-offset: 2px; border-radius: 6px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 12px; z-index: 10; background: var(--card); padding: 8px 12px; }

.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }

/* header */
.top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--tx); text-decoration: none; font-weight: 800; font-size: 20px; }
.brand svg { width: 30px; height: 30px; flex: none; }
.nav { display: none; gap: 22px; margin-left: 12px; }
.nav a { color: var(--tx-2); text-decoration: none; font-size: 15px; }
.nav a:hover { color: var(--tx); }
@media (min-width: 900px) { .nav { display: flex; } }
.top-end { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.lang { color: var(--tx-2); text-decoration: none; font-size: 14px; font-weight: 600; padding: 6px 8px; }
.btn.signin { display: none; }   /* on narrow phones only Sign up fits next to the logo */
@media (min-width: 400px) { .btn.signin { display: inline-flex; } }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 20px; border-radius: 12px;
  font-weight: 650; font-size: 15px; text-decoration: none; border: 1px solid transparent; white-space: nowrap; }
.btn.primary { background: var(--acc); color: var(--acc-tx); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { color: var(--tx); border-color: var(--line); background: var(--card); }
.btn.sm { min-height: 38px; padding: 0 14px; font-size: 14px; border-radius: 10px; }
.btn.warm { background: var(--warm); color: #101828; }

/* hero */
.hero { padding: 56px 0 40px; }
.hero .wrap { display: grid; gap: 40px; align-items: center; }
@media (min-width: 960px) { .hero { padding: 88px 0 72px; } .hero .wrap { grid-template-columns: 1.05fr 0.95fr; gap: 56px; } }
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--acc); margin-bottom: 14px; }
.hero h1 { font-size: clamp(34px, 6vw, 56px); font-weight: 800; }
.hero .lead { font-size: clamp(17px, 2.2vw, 20px); color: var(--tx-2); margin-top: 18px; max-width: 36em; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.small { font-size: 14px; color: var(--tx-3); margin-top: 14px; }

/* the flow picture: channels → Relay → your team */
.flow { background: var(--ink); color: var(--ink-tx); border-radius: 24px; padding: 22px; display: grid; gap: 14px; }
@media (min-width: 560px) { .flow { padding: 28px; } .flow-col { grid-template-columns: 1fr 1fr; } }   /* top to bottom: channels → Relay → your team */
.flow-col { display: grid; gap: 10px; }
.chip { display: flex; align-items: center; gap: 10px; background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 12px; padding: 10px 12px; font-size: 14px; font-weight: 600; }
.chip svg { width: 18px; height: 18px; flex: none; color: var(--warm); }
.hub { background: var(--warm); color: #101828; border-radius: 16px; padding: 14px 16px; display: flex; flex-wrap: wrap; align-items: baseline; justify-content: center; gap: 4px 10px; }
.hub b { font-size: 20px; }
.hub span { font-size: 13px; font-weight: 600; }
.arrow { color: var(--warm); display: flex; justify-content: center; }
.arrow svg { width: 26px; height: 26px; transform: rotate(90deg); }

/* the tools it works with */
.works { padding: 0 0 48px; }
.works p { text-align: center; color: var(--tx-3); font-size: 14px; font-weight: 650; }
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 10px; margin-top: 14px; }
.chips span { background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: 14px; font-weight: 650; color: var(--tx-2); }

/* sections */
section.band { padding: 64px 0; }
section.band.alt { background: var(--bg-2); }
.band h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; max-width: 22em; }
.band .sub { color: var(--tx-2); margin-top: 12px; max-width: 46em; font-size: 17px; }
.grid { display: grid; gap: 16px; margin-top: 32px; }
@media (min-width: 640px) { .grid.two, .grid.four, .grid.three { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .grid.three { grid-template-columns: repeat(3, 1fr); } .grid.four { grid-template-columns: repeat(4, 1fr); } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; }
.card h3 { font-size: 19px; margin: 12px 0 8px; }
.card p { color: var(--tx-2); font-size: 15.5px; }
.card .ic { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: color-mix(in srgb, var(--acc) 12%, transparent); color: var(--acc); }
.card .ic svg { width: 22px; height: 22px; }
.group-h { margin: 40px 0 -12px; font-size: 13px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--tx-3); }
.card .tag { display: inline-block; margin-top: 12px; font-size: 12.5px; font-weight: 650; color: var(--tx-3); }
.ticks { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 10px; }
.ticks li { position: relative; padding-left: 28px; color: var(--tx-2); font-size: 15.5px; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 7px; width: 14px; height: 8px; border-left: 2.5px solid var(--ok); border-bottom: 2.5px solid var(--ok); transform: rotate(-45deg); }
.steps { counter-reset: step; }
.steps .card { position: relative; padding-top: 64px; }
.steps .card::before { counter-increment: step; content: counter(step); position: absolute; top: 20px; left: 24px; width: 34px; height: 34px; border-radius: 50%;
  background: var(--ink); color: var(--ink-tx); display: grid; place-items: center; font-weight: 800; }

/* questions */
.faq { margin-top: 28px; display: grid; gap: 10px; max-width: 820px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 0 20px; }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 650; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--tx-3); font-weight: 400; font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--tx-2); padding-bottom: 16px; }

.closing { background: var(--ink); color: var(--ink-tx); border-radius: 24px; padding: 40px 24px; text-align: center; }
.closing h2 { color: var(--ink-tx); margin: 0 auto; }
.closing p { color: var(--ink-2); margin-top: 12px; }
.closing .cta { justify-content: center; }
.closing a:not(.btn) { color: var(--warm); }
.closing .btn.ghost { background: transparent; color: var(--ink-tx); border-color: rgba(255, 255, 255, 0.28); }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--tx-3); font-size: 14px; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; }
.foot a { color: var(--tx-2); text-decoration: none; }
.foot a:hover { text-decoration: underline; }
.foot .end { margin-left: auto; }

/* terms and privacy */
.doc { padding: 40px 0 64px; }
.doc .wrap { max-width: 820px; }
.doc h1 { font-size: clamp(30px, 5vw, 42px); font-weight: 800; }
.doc .meta { color: var(--tx-3); margin-top: 10px; font-size: 14px; }
.doc .note { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--warm); border-radius: 12px; padding: 14px 16px; margin-top: 24px; color: var(--tx-2); }
.doc h2 { font-size: 22px; margin: 36px 0 10px; }
.doc h3 { font-size: 17px; margin: 20px 0 6px; }
.doc p, .doc li { color: var(--tx-2); }
.doc p + p { margin-top: 10px; }
.doc ul { padding-left: 22px; margin: 8px 0 0; display: grid; gap: 6px; }
.doc .toc { margin-top: 24px; columns: 2 220px; font-size: 15px; }
.doc .toc a { text-decoration: none; }
.doc table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 14.5px; display: block; overflow-x: auto; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 9px 10px; border-bottom: 1px solid var(--line); color: var(--tx-2); }
.doc th { color: var(--tx); font-weight: 650; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }