/* PlatenFlow shared styles — light mode */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg:#ffffff; --bg-soft:#f7f8fa; --bg-section:#f1f3f7;
  --surface:#ffffff; --border:#e6e8ec; --border-strong:#d4d8df;
  --ink:#0d1220; --text:#374151; --muted:#6b7280; --muted-2:#9aa3af;
  --blue:#0066cc; --blue-light:#74b9ff; --blue-soft:#eef5ff;
  --blue-grad:linear-gradient(135deg,#74b9ff 0%,#0066cc 100%);
  --green:#16a34a; --green-soft:#ecfdf5;
  --red:#b91c1c; --red-soft:#fef2f2;
  --shadow-sm:0 1px 2px rgba(15,23,42,.04),0 1px 1px rgba(15,23,42,.03);
  --shadow:0 1px 3px rgba(15,23,42,.06),0 4px 12px rgba(15,23,42,.04);
  --shadow-lg:0 12px 32px rgba(15,23,42,.08),0 4px 12px rgba(15,23,42,.04);
  --r:6px;
}
html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body {
  background:var(--bg); color:var(--text);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:16px; line-height:1.55; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before {
  content:''; position:fixed; inset:0;
  background-image:radial-gradient(circle at 1px 1px,rgba(15,23,42,.035) 1px,transparent 0);
  background-size:28px 28px; pointer-events:none; z-index:0;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.6) 0%,rgba(0,0,0,0) 600px);
}
main, nav, footer, section, header { position:relative; z-index:1; }
a { color:inherit; text-decoration:none; }
button { font:inherit; cursor:pointer; border:0; background:transparent; }
img, svg { display:block; max-width:100%; }
.container { max-width:1240px; margin:0 auto; padding:0 32px; }

/* NAV */
nav { position:sticky; top:0; z-index:50; background:rgba(255,255,255,.92); backdrop-filter:saturate(180%) blur(12px); border-bottom:1px solid var(--border); }
.nav-row { display:flex; align-items:center; justify-content:space-between; gap:18px; height:78px; }
.brand { display:flex; align-items:center; }
.brand-img { height:48px; width:auto; display:block; border-radius:6px; }
.nav-links { display:flex; gap:32px; align-items:center; }
.nav-links a { font-size:14px; font-weight:500; color:var(--text); transition:color .15s; }
.nav-links a:hover { color:var(--ink); }
.nav-cta { display:flex; gap:10px; align-items:center; }
.nav-toggle { display:none; width:40px; height:40px; align-items:center; justify-content:center; border:1px solid var(--border-strong); border-radius:8px; background:#fff; color:var(--ink); }
.nav-toggle:hover { background:var(--bg-soft); }
.mobile-nav { display:none; }

@media (max-width:980px) {
  .nav-links { display:none; }
  .nav-toggle { display:inline-flex; }
  .nav-cta .nav-demo { display:none; }
  .mobile-nav { display:none; flex-direction:column; padding:8px 20px 20px; background:#fff; border-top:1px solid var(--border); }
  nav.open .mobile-nav { display:flex; }
  .mobile-nav a { font-size:15px; font-weight:500; color:var(--ink); padding:12px 4px; border-bottom:1px solid var(--border); }
  .mobile-nav a:last-child { border-bottom:0; }
  .mobile-nav .m-demo { color:var(--blue); font-weight:600; margin-top:6px; }
}
@media (max-width:700px) {
  .brand-img { height:38px; }
  .nav-row { height:64px; gap:10px; }
  .nav-cta { gap:6px; }
}

.btn { display:inline-flex; align-items:center; gap:8px; padding:10px 18px; border-radius:var(--r); font-size:14px; font-weight:600; transition:all .15s; border:1px solid transparent; white-space:nowrap; }
.btn-primary { background:var(--ink); color:#fff; box-shadow:var(--shadow-sm); }
.btn-primary:hover { background:var(--blue); transform:translateY(-1px); box-shadow:var(--shadow); }
.btn-secondary { background:var(--surface); color:var(--ink); border-color:var(--border-strong); }
.btn-secondary:hover { border-color:var(--ink); background:var(--bg-soft); }
.btn-ghost { color:var(--ink); padding:10px 14px; }
.btn-ghost:hover { color:var(--blue); }
.btn-lg { padding:14px 24px; font-size:15px; }

/* PAGE LAYOUT */
.page { padding:80px 0; }
.page-head { max-width:760px; margin:0 auto 56px; text-align:center; }
.page-head .eyebrow { display:inline-block; font-size:12px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--blue); margin-bottom:14px; }
.page-head h1 { font-size:clamp(34px,5vw,52px); line-height:1.1; letter-spacing:-0.03em; font-weight:800; color:var(--ink); margin-bottom:18px; }
.page-head .lede { font-size:18px; color:var(--muted); line-height:1.55; }

.section { padding:64px 0; }
.section.alt { background:var(--bg-section); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.section h2 { font-size:clamp(26px,3.5vw,36px); line-height:1.15; letter-spacing:-0.02em; font-weight:800; color:var(--ink); margin-bottom:18px; }
.section .lede { font-size:17px; color:var(--muted); line-height:1.6; margin-bottom:32px; }

/* PROSE BLOCKS */
.prose { max-width:760px; margin:0 auto; }
.prose h2 { font-size:26px; font-weight:700; color:var(--ink); margin:48px 0 16px; letter-spacing:-0.015em; }
.prose h3 { font-size:18px; font-weight:700; color:var(--ink); margin:32px 0 10px; }
.prose p { font-size:16px; color:var(--text); line-height:1.7; margin-bottom:14px; }
.prose ul, .prose ol { margin:14px 0 14px 24px; }
.prose li { font-size:16px; color:var(--text); line-height:1.7; margin-bottom:8px; }
.prose a { color:var(--blue); font-weight:500; }
.prose a:hover { text-decoration:underline; }
.prose strong { color:var(--ink); font-weight:600; }
.prose .note { background:var(--bg-soft); border:1px solid var(--border); border-left:3px solid var(--blue); padding:16px 18px; border-radius:6px; margin:24px 0; font-size:14px; color:var(--text); }

/* CARDS */
.card-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; max-width:1100px; margin:0 auto; }
.card { background:#fff; border:1px solid var(--border); border-radius:10px; padding:24px; transition:all .2s; }
.card:hover { border-color:var(--border-strong); transform:translateY(-2px); box-shadow:var(--shadow); }
.card h3 { font-size:17px; font-weight:700; color:var(--ink); margin-bottom:8px; }
.card p { font-size:14px; color:var(--muted); line-height:1.6; }
.card a.more { display:inline-block; font-size:13px; font-weight:600; color:var(--blue); margin-top:14px; }
.card a.more:hover { text-decoration:underline; }

/* FAQ */
.faq { max-width:820px; margin:0 auto; }
.faq-item { background:#fff; border:1px solid var(--border); border-radius:8px; margin-bottom:10px; overflow:hidden; }
.faq-item summary { list-style:none; cursor:pointer; padding:18px 24px; display:flex; justify-content:space-between; align-items:center; font-size:16px; font-weight:600; color:var(--ink); }
.faq-item summary::-webkit-details-marker { display:none; }
.faq-item summary:hover { background:var(--bg-soft); }
.faq-item summary::after { content:'+'; font-size:24px; font-weight:300; color:var(--muted); }
.faq-item[open] summary::after { content:'−'; color:var(--blue); }
.faq-item .ans { padding:0 24px 22px; font-size:15px; line-height:1.65; color:var(--text); }
.faq-item .ans strong { color:var(--ink); font-weight:600; }

/* CHANGELOG */
.log { max-width:780px; margin:0 auto; }
.log-entry { background:#fff; border:1px solid var(--border); border-radius:10px; padding:24px 28px; margin-bottom:16px; }
.log-entry .head { display:flex; align-items:baseline; gap:14px; margin-bottom:14px; padding-bottom:12px; border-bottom:1px solid var(--border); flex-wrap:wrap; }
.log-entry .ver { font-family:'JetBrains Mono',monospace; font-size:15px; font-weight:700; color:var(--ink); }
.log-entry .date { font-size:13px; color:var(--muted); }
.log-entry .tag { font-size:11px; font-weight:700; letter-spacing:.06em; text-transform:uppercase; padding:2px 8px; border-radius:4px; }
.log-entry .tag.feat { background:var(--blue-soft); color:var(--blue); }
.log-entry .tag.fix { background:var(--green-soft); color:var(--green); }
.log-entry .tag.note { background:#f3f4f6; color:var(--muted); }
.log-entry h3 { font-size:16px; font-weight:700; color:var(--ink); margin-bottom:8px; }
.log-entry ul { margin:8px 0 0 22px; }
.log-entry li { font-size:14px; line-height:1.6; color:var(--text); margin-bottom:4px; }

/* STATUS */
.status-badge { display:inline-flex; align-items:center; gap:10px; padding:14px 20px; border-radius:8px; background:var(--green-soft); border:1px solid #bbf7d0; color:var(--green); font-weight:700; font-size:16px; }
.status-badge .dot { width:10px; height:10px; border-radius:50%; background:var(--green); }
.status-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; max-width:760px; margin:32px auto 0; }
.status-row { display:flex; justify-content:space-between; align-items:center; padding:14px 18px; background:#fff; border:1px solid var(--border); border-radius:8px; font-size:14px; }
.status-row .name { color:var(--ink); font-weight:500; }
.status-row .ok { color:var(--green); font-weight:700; font-size:13px; display:inline-flex; align-items:center; gap:6px; }
.status-row .ok::before { content:''; width:8px; height:8px; border-radius:50%; background:var(--green); }

/* CONTACT */
.contact-card { max-width:560px; margin:0 auto; background:#fff; border:1px solid var(--border); border-radius:12px; padding:36px; text-align:center; }
.contact-card h3 { font-size:18px; font-weight:700; color:var(--ink); margin-bottom:8px; }
.contact-card .email { display:inline-block; margin-top:18px; font-size:20px; font-weight:600; color:var(--blue); }
.contact-card .email:hover { text-decoration:underline; }
.contact-card .meta { font-size:13px; color:var(--muted); margin-top:14px; }

/* CTA STRIP */
.cta-strip { background:var(--ink); color:#fff; padding:64px 0; text-align:center; position:relative; overflow:hidden; }
.cta-strip::before { content:''; position:absolute; inset:0; background:radial-gradient(ellipse 60% 80% at 50% 50%,rgba(116,185,255,.18) 0%,transparent 70%); }
.cta-strip > .container { position:relative; }
.cta-strip h2 { font-size:clamp(26px,3.5vw,36px); font-weight:800; color:#fff; margin-bottom:12px; letter-spacing:-0.02em; }
.cta-strip p { color:rgba(255,255,255,.7); font-size:16px; max-width:520px; margin:0 auto 24px; }
.cta-strip .btn-primary { background:#fff; color:var(--ink); }
.cta-strip .btn-primary:hover { background:var(--blue-light); transform:translateY(-1px); }
.cta-strip .btn-secondary { background:transparent; color:#fff; border-color:rgba(255,255,255,.25); }
.cta-strip .btn-secondary:hover { border-color:#fff; background:rgba(255,255,255,.05); }
.cta-strip-ctas { display:flex; gap:10px; justify-content:center; flex-wrap:wrap; }

/* FOOTER */
footer { background:#fff; border-top:1px solid var(--border); padding:56px 0 32px; }
.foot-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; margin-bottom:40px; }
.foot-about p { font-size:14px; color:var(--muted); line-height:1.6; margin-top:14px; max-width:320px; }
.foot-col h5 { font-size:12px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); margin-bottom:14px; }
.foot-col ul { list-style:none; }
.foot-col li { margin-bottom:8px; }
.foot-col a { font-size:14px; color:var(--text); }
.foot-col a:hover { color:var(--blue); }
.foot-bottom { display:flex; justify-content:space-between; align-items:center; padding-top:28px; border-top:1px solid var(--border); font-size:13px; color:var(--muted); flex-wrap:wrap; gap:16px; }

/* RESPONSIVE */
@media (max-width:980px) {
  .card-grid { grid-template-columns:1fr 1fr; }
  .foot-grid { grid-template-columns:1fr 1fr; gap:32px; }
  .status-grid { grid-template-columns:1fr; }
  .page { padding:56px 0; }
  .section { padding:48px 0; }
}
@media (max-width:700px) {
  .container { padding:0 20px; }
  .card-grid { grid-template-columns:1fr; }
  .foot-grid { grid-template-columns:1fr; }
}