/* OnStat — style.css */
:root{
  --bg:#f6f8fb; --surface:#ffffff; --text:#0f172a; --muted:#5b6b82;
  --accent:#2563eb; --accent-dark:#1d4ed8; --accent-soft:#eaf1fe;
  --border:#e3e9f2; --radius:14px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow:0 8px 24px rgba(15,23,42,.08);
  --ok:#0f9d58; --warn:#b45309;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{vertical-align:middle}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
::selection{background:var(--accent);color:#fff}

/* ---------- header ---------- */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.header-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--text)}
.brand:hover{text-decoration:none}
.brand .logo{width:30px;height:30px;border-radius:8px}
nav.main{display:flex;align-items:center;gap:26px}
nav.main a{color:#334155;font-size:.95rem;font-weight:500}
nav.main a:hover{color:var(--accent);text-decoration:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:10px;padding:10px 18px;
  font:600 .95rem/1 system-ui,sans-serif;cursor:pointer;transition:.15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);text-decoration:none;color:#fff}
.btn-ghost{border-color:var(--border);color:#334155;background:var(--surface)}
.btn-ghost:hover{border-color:#c3cfdf;text-decoration:none;color:var(--text)}
.btn-sm{padding:8px 14px;font-size:.88rem}
#menu-toggle{display:none}
.menu-icon{display:none;cursor:pointer;padding:8px}
@media (max-width:820px){
  nav.main{display:none;position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--border);padding:10px 20px 16px}
  nav.main a{padding:12px 4px;border-bottom:1px solid var(--border)}
  .menu-icon{display:block}
  #menu-toggle:checked ~ nav.main{display:flex}
}

/* ---------- hero ---------- */
.hero{background:
  radial-gradient(1000px 420px at 80% -10%, rgba(37,99,235,.14), transparent 60%),
  radial-gradient(800px 380px at 0% 110%, rgba(14,165,233,.10), transparent 60%),
  var(--bg);
  padding:72px 0 56px;text-align:center}
.badge{display:inline-flex;align-items:center;gap:8px;background:var(--accent-soft);
  color:var(--accent-dark);font-weight:600;font-size:.86rem;
  border:1px solid #cfe0fd;border-radius:999px;padding:6px 14px;margin-bottom:20px}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}
.hero h1{font-size:2.6rem;line-height:1.2;letter-spacing:-.02em;margin:0 auto 16px;max-width:780px}
.hero .sub{font-size:1.15rem;color:var(--muted);max-width:640px;margin:0 auto 28px}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero .hint{margin-top:18px;color:var(--muted);font-size:.88rem}
.hero .hint code{background:#fff;border:1px solid var(--border);border-radius:6px;padding:2px 8px;font-size:.85rem}

/* ---------- sections ---------- */
section{padding:64px 0}
.sec-head{text-align:center;max-width:640px;margin:0 auto 40px}
.sec-head h2{font-size:2rem;letter-spacing:-.01em;margin:0 0 10px}
.sec-head p{color:var(--muted);margin:0}
.grid{display:grid;gap:20px}
.grid.features{grid-template-columns:repeat(3,1fr)}
.grid.steps{grid-template-columns:repeat(3,1fr)}
@media (max-width:900px){.grid.features,.grid.steps{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.grid.features,.grid.steps{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);transition:.15s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.card .ic{width:44px;height:44px;border-radius:11px;background:var(--accent-soft);
  display:grid;place-items:center;margin-bottom:14px}
.card h3{margin:0 0 8px;font-size:1.05rem}
.card p{margin:0;color:var(--muted);font-size:.93rem}

.step .num{width:40px;height:40px;border-radius:50%;background:var(--accent);color:#fff;
  display:grid;place-items:center;font-weight:700;margin-bottom:14px}

/* ---------- stats ---------- */
.stats{border-block:1px solid var(--border);background:var(--surface)}
.stats .grid{grid-template-columns:repeat(4,1fr);text-align:center;padding:32px 0}
@media (max-width:700px){.stats .grid{grid-template-columns:1fr 1fr}}
.stat b{display:block;font-size:1.7rem;letter-spacing:-.02em}
.stat span{color:var(--muted);font-size:.9rem}

/* ---------- pricing ---------- */
.grid.pricing{grid-template-columns:repeat(4,1fr);align-items:stretch}
@media (max-width:1000px){.grid.pricing{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.grid.pricing{grid-template-columns:1fr}}
.price{display:flex;flex-direction:column}
.price .name{font-weight:700;margin-bottom:4px}
.price .amount{font-size:1.9rem;font-weight:800;letter-spacing:-.02em;margin:6px 0 2px}
.price .period{color:var(--muted);font-size:.85rem;margin-bottom:16px}
.price ul{list-style:none;margin:0 0 20px;padding:0;color:#334155;font-size:.92rem;flex:1}
.price li{padding:5px 0 5px 26px;position:relative}
.price li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:700}
.price.hot{border:2px solid var(--accent);position:relative}
.price.hot .tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--accent);color:#fff;font-size:.75rem;font-weight:700;
  padding:4px 12px;border-radius:999px;white-space:nowrap}
.price .btn{margin-top:auto}
.invite-note{margin-top:28px;background:var(--accent-soft);border:1px solid #cfe0fd;
  border-radius:var(--radius);padding:18px 22px;display:flex;gap:14px;align-items:flex-start}
.invite-note .ic{flex:0 0 auto;font-size:1.3rem}
.invite-note p{margin:0;font-size:.95rem;color:#1e3a8a}
.invite-note a{font-weight:600}

/* ---------- FAQ ---------- */
.faq{max-width:760px;margin:0 auto}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:12px;
  margin-bottom:12px;padding:0 20px}
.faq summary{cursor:pointer;font-weight:600;padding:16px 0;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:12px;font-size:1.3rem;color:var(--accent)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0 0 16px;color:var(--muted);font-size:.94rem}

/* ---------- CTA band ---------- */
.band{background:linear-gradient(120deg,#1e3a8a,#2563eb);border-radius:20px;
  color:#fff;padding:44px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.band h2{margin:0 0 8px;font-size:1.6rem}
.band p{margin:0;opacity:.85}
.band .btn{background:#fff;color:var(--accent-dark)}
.band .btn:hover{background:#eef2ff;color:var(--accent-dark)}
@media (max-width:700px){.band{flex-direction:column;text-align:center}}

/* ---------- footer ---------- */
footer.site{background:#0f172a;color:#94a3b8;padding:56px 0 32px;margin-top:64px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:32px}
@media (max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}
footer.site h4{color:#e2e8f0;font-size:.95rem;margin:0 0 14px}
footer.site ul{list-style:none;margin:0;padding:0}
footer.site li{margin:8px 0}
footer.site a{color:#94a3b8;font-size:.92rem}
footer.site a:hover{color:#fff;text-decoration:none}
.foot-brand p{font-size:.9rem;max-width:280px;margin:12px 0 0}
.foot-bottom{border-top:1px solid #1e293b;margin-top:40px;padding-top:22px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.85rem}

/* ---------- auth pages ---------- */
.auth-hero{padding:48px 0 24px;text-align:center}
.auth-card{max-width:440px;margin:0 auto 56px;background:var(--surface);
  border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);padding:36px}
.auth-card h1{font-size:1.5rem;margin:0 0 6px;text-align:center}
.auth-card .lead{color:var(--muted);text-align:center;font-size:.95rem;margin:0 0 24px}
.field{margin-bottom:16px}
.field label{display:block;font-size:.88rem;font-weight:600;margin-bottom:6px}
.field input,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--border);
  border-radius:10px;font:inherit;background:var(--bg);color:var(--text)}
.field input:focus,.field textarea:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}
.field small{display:block;color:var(--muted);margin-top:5px;font-size:.8rem}
.auth-card .btn{width:100%;padding:13px}
.auth-links{text-align:center;font-size:.9rem;margin-top:18px;color:var(--muted)}
.alert{display:none;border-radius:10px;padding:12px 14px;font-size:.9rem;margin-bottom:18px}
.alert.err{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}
.alert.ok{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534}
.form-footer{text-align:center;color:var(--muted);font-size:.85rem;margin-top:16px}

/* ---------- legal pages ---------- */
.legal{max-width:800px;margin:40px auto 64px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);padding:40px 44px;box-shadow:var(--shadow-sm)}
.legal h1{font-size:1.7rem;margin:0 0 6px}
.legal .updated{color:var(--muted);font-size:.86rem;margin-bottom:28px}
.legal h2{font-size:1.15rem;margin:26px 0 8px}
.legal p,.legal li{color:#334155;font-size:.95rem}
.legal ol.plain{padding-left:22px}
.legal ol.plain>li{margin:10px 0}

/* ---------- 404 ---------- */
.err-page{text-align:center;padding:96px 20px}
.err-page .code{font-size:5rem;font-weight:800;color:var(--accent);letter-spacing:-.03em;line-height:1}
.err-page h1{font-size:1.5rem;margin:16px 0 8px}
.err-page p{color:var(--muted);max-width:480px;margin:0 auto 28px}