:root{
  --bg:#f5f6f8;
  --bg2:#ffffff;
  --panel:#ffffff;
  --panel2:#f3f4f7;
  --line:#e6e8ee;
  --line2:#d4d7e0;
  --txt:#0b1220;
  --muted:#5c6370;
  --muted2:#8a90a0;
  --brand:#2563eb;
  --brand2:#1d4ed8;
  --brand-soft:#eff4ff;
  --accent:#0f766e;
  --ok:#15803d;
  --warn:#b45309;
  --err:#dc2626;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(17,19,24,.04), 0 10px 28px rgba(17,19,24,.06);
  --shadow-sm:0 1px 2px rgba(17,19,24,.05);
  --grad:var(--brand);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--txt);
  line-height:1.55;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;margin:0 0 .4em;letter-spacing:-.03em;font-weight:700}
p{margin:.3em 0 1em}
.muted{color:var(--muted)}
.mono{font-family:ui-monospace,"Cascadia Code",Consolas,monospace;font-size:.85em;word-break:break-all}
.sm{font-size:.85em}

/* ---------- topbar ---------- */
.topbar{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.topbar-in{max-width:1120px;margin:0 auto;padding:14px 22px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:1.08rem;color:var(--txt);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand b{color:var(--brand);font-weight:700}
.brand.big{font-size:1.28rem;margin-bottom:22px}
.brand-mark{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--brand);color:#fff;font-weight:800;font-size:.95rem}
.brand-logo{display:block;height:32px;width:auto;max-width:180px;object-fit:contain}
.brand.big .brand-logo{height:40px;max-width:220px}
.logo-preview{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin:8px 0 18px;padding:14px;border:1px solid var(--line);border-radius:12px;background:var(--bg-soft,#f7f8fa)}
.logo-preview img{height:48px;width:auto;max-width:240px;object-fit:contain}
.form-sep{border:0;border-top:1px solid var(--line);margin:22px 0}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav a{color:var(--muted);padding:8px 12px;border-radius:10px;font-size:.93rem}
.nav a:hover{color:var(--txt);background:var(--panel2);text-decoration:none}
.nav a.cta{background:var(--brand);color:#fff;font-weight:650}
.nav a.cta:hover{background:var(--brand2)}
.nav a.admin-link{border:1px solid var(--line);color:var(--muted)}

/* ---------- layout ---------- */
.wrap{max-width:1120px;margin:0 auto;padding:36px 22px 64px}
.footer{border-top:1px solid var(--line);background:var(--bg2)}
.footer-in{max-width:1120px;margin:0 auto;padding:22px;display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:.9rem;flex-wrap:wrap}

/* ---------- hero ---------- */
.hero{text-align:center;padding:46px 0 30px}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.74rem;color:var(--brand);font-weight:700}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:750;letter-spacing:-.04em}
.hero .grad,.grad{color:var(--brand)}
.hero .sub{max-width:640px;margin:0 auto 8px;color:var(--muted);font-size:1.08rem}
.cta-row{display:flex;gap:12px;justify-content:center;margin:22px 0 10px;flex-wrap:wrap}
.note{color:var(--muted2);font-size:.9rem}

/* ---------- features ---------- */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:34px 0}
.features-4{grid-template-columns:repeat(4,1fr)}
.feat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.18s ease;box-shadow:var(--shadow-sm)}
.feat:hover{border-color:#c9d3ea;transform:translateY(-2px);box-shadow:var(--shadow)}
.feat h3{font-size:1.05rem}
.feat h3::before{content:"";display:inline-block;width:8px;height:8px;border-radius:99px;background:var(--brand);margin-right:8px;vertical-align:middle}
.feat p{color:var(--muted);margin:0}
.guide-steps{margin:0;padding:0;list-style:none;counter-reset:gs}
.guide-steps li{counter-increment:gs;display:grid;grid-template-columns:36px 1fr;gap:12px;align-items:start;padding:10px 0;border-bottom:1px solid var(--line)}
.guide-steps li:last-child{border-bottom:0}
.guide-steps li::before{content:counter(gs);display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--brand-soft);color:var(--brand2);font-weight:800;font-size:.85rem}
.guide-steps strong{display:block;margin-bottom:2px}
.guide-steps span{display:block;color:var(--muted);font-size:.9rem;line-height:1.45}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;
  border:1px solid var(--line2);background:var(--bg2);color:var(--txt);
  padding:11px 18px;border-radius:11px;font-size:.95rem;font-weight:600;transition:.15s;text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-1px);border-color:#b8bfd0;background:#fff}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand2);border-color:var(--brand2);opacity:1}
.btn.ghost{background:transparent}
.btn.block{width:100%;margin-top:8px}
.btn.lg{padding:13px 22px;font-size:1rem;border-radius:12px}
.btn.sm{padding:6px 11px;font-size:.82rem;border-radius:8px}
.btn.danger{color:#b91c1c;border-color:#fecaca;background:#fff}
.btn.danger:hover{background:#fef2f2}
.btn:disabled{opacity:.62;cursor:wait;transform:none}

/* ---------- cards ---------- */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin:0 0 20px;box-shadow:var(--shadow-sm)}
.card.narrow{max-width:520px}
.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;gap:12px}
.card-head h3{margin:0}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.empty{color:var(--muted);padding:14px 0}

.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.page-head h1{font-size:1.7rem;letter-spacing:-.03em}
.page-head .muted{margin:0}

/* ---------- stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm)}
.stat-num{display:block;font-size:1.8rem;font-weight:750;letter-spacing:-.03em}
.stat-num.warn{color:var(--warn)}
.stat-lbl{color:var(--muted);font-size:.85rem}

/* ---------- forms ---------- */
label{display:block;margin:14px 0 6px;font-size:.9rem;color:var(--muted);font-weight:600}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input[type=file],select,textarea{
  width:100%;background:#fff;border:1px solid var(--line2);color:var(--txt);
  padding:11px 13px;border-radius:11px;font-size:.95rem;font-family:inherit;transition:.15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
textarea{resize:vertical}
textarea.code{font-family:ui-monospace,Consolas,monospace;font-size:.9rem;background:#fafbfc}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-row .col{min-width:0}
.hint{color:var(--muted2);font-size:.82rem;margin:6px 0 0}
.checks{display:flex;gap:22px;flex-wrap:wrap;margin:16px 0}
.chk{display:flex;align-items:center;gap:8px;color:var(--txt);font-weight:500;margin:0}
.chk input{width:auto}
.inline-form{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.inline-form input,.inline-form select{width:auto;flex:0 0 auto}
form.mini{display:flex;gap:6px;align-items:center}

/* ---------- tables ---------- */
.tbl{width:100%;border-collapse:collapse;font-size:.92rem}
.tbl th,.tbl td{text-align:left;padding:12px 12px;border-bottom:1px solid var(--line)}
.tbl thead th{color:var(--muted);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em}
.tbl tbody tr:hover{background:#f8f9fb}
.tbl.kv th{width:180px;color:var(--muted);font-weight:600}
.row-actions{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:.75rem;font-weight:700;background:var(--panel2);border:1px solid var(--line);color:var(--muted)}
.badge.ok{background:#ecfdf3;border-color:#bbf7d0;color:#166534}
.badge.warn{background:#fffbeb;border-color:#fde68a;color:#92400e}
.badge.err{background:#fef2f2;border-color:#fecaca;color:#991b1b}

/* ---------- code blocks ---------- */
.code-block{background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:14px;overflow:auto;
  font-family:ui-monospace,Consolas,monospace;font-size:.85rem;color:#1e293b;white-space:pre-wrap;word-break:break-word}
.code-block.scroll{max-height:520px}

/* ---------- flash ---------- */
.flash-wrap{max-width:1120px;margin:16px auto 0;padding:0 22px;display:flex;flex-direction:column;gap:10px}
.flash-wrap.narrow{max-width:440px}
.flash{padding:12px 16px;border-radius:12px;font-size:.92rem;border:1px solid}
.flash.ok{background:#ecfdf3;border-color:#bbf7d0;color:#166534}
.flash.warn{background:#fffbeb;border-color:#fde68a;color:#92400e}
.flash.err{background:#fef2f2;border-color:#fecaca;color:#991b1b}

/* ---------- auth pages ---------- */
.auth-body{display:grid;place-items:center;min-height:100vh;padding:30px 16px;background:
  radial-gradient(900px 420px at 80% -10%,rgba(37,99,235,.08),transparent 60%),
  var(--bg)}
.auth-shell{width:100%;max-width:440px}
.auth-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow);max-width:440px;margin:0 auto}
.auth-card .eyebrow{margin-bottom:8px}
.auth-card.wide{max-width:620px}
.auth-card h2{font-size:1.45rem}
.auth-alt{margin:16px 0 0;color:var(--muted);font-size:.9rem;text-align:center}
.auth-foot{text-align:center;margin-top:18px}
.auth-foot a{color:var(--muted)}

.wrap>.auth-card{margin-top:30px}

/* ---------- admin layout ---------- */
.admin-body{display:flex;min-height:100vh;background:var(--bg)}
.sidebar{width:250px;flex:0 0 250px;background:#fff;border-right:1px solid var(--line);
  padding:22px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.sidebar .brand{margin-bottom:22px}
.side-nav{display:flex;flex-direction:column;gap:3px;flex:1;overflow:auto}
.side-nav a{color:var(--muted);padding:10px 13px;border-radius:10px;font-size:.92rem}
.side-nav a:hover{background:var(--panel2);color:var(--txt);text-decoration:none}
.side-nav a.active{background:var(--brand-soft);color:var(--brand2);box-shadow:inset 3px 0 0 var(--brand);font-weight:650}
.side-foot{border-top:1px solid var(--line);padding-top:14px;margin-top:10px;display:flex;flex-direction:column;gap:10px}
.side-foot .who{font-size:.85rem;color:var(--txt)}
.admin-main{flex:1;min-width:0;display:flex;flex-direction:column}
.admin-top{display:flex;align-items:center;justify-content:space-between;padding:18px 26px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.88);position:sticky;top:0;z-index:20;backdrop-filter:blur(10px)}
.admin-top h1{font-size:1.2rem;margin:0}
.admin-content{padding:24px 26px 60px}
.admin-body .flash-wrap{margin:16px 26px 0;padding:0}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .features-4{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .features{grid-template-columns:1fr 1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
  .grid-2{grid-template-columns:1fr}
}
@media(max-width:640px){
  .features,.features-4{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
  .form-row{grid-template-columns:1fr}
  .sidebar{position:fixed;left:-260px;transition:.2s;z-index:60}
  .admin-body{display:block}
  .nav a{padding:7px 9px;font-size:.86rem}
}