:root{
  --bg:#f1f5f9; --card:#ffffff; --ink:#0f172a; --muted:#64748b;
  --line:#e2e8f0; --accent:#0d9488; --accent-d:#0f766e;
  --danger:#dc2626; --ok:#16a34a; --head:#0f172a;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.5}
a{color:var(--accent-d);text-decoration:none}

/* Top bar */
.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;
  background:var(--head);color:#fff;padding:12px 22px;flex-wrap:wrap}
.brand a{color:#fff;font-weight:700;font-size:1.15rem}
.brand .tag{display:block;color:#94a3b8;font-size:.72rem;letter-spacing:.02em}
.topbar nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.topbar nav a{color:#cbd5e1;font-size:.92rem}
.topbar nav a:hover{color:#fff}
.who{color:#94a3b8;font-size:.82rem}
.btn-out{border:1px solid #334155;padding:5px 12px;border-radius:8px}

/* Layout */
.wrap{max-width:960px;margin:26px auto;padding:0 18px}
h1{font-size:1.5rem;margin:0 0 18px}
h2{font-size:1.1rem;margin:0 0 14px}
h3{font-size:.95rem;margin:18px 0 8px;color:var(--muted)}
.muted{color:var(--muted)}
.empty{color:var(--muted);font-style:italic;margin:6px 0}

/* Cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:20px 22px;margin-bottom:20px;box-shadow:0 1px 2px rgba(15,23,42,.04)}

/* Tables */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.03em}
tr:last-child td{border-bottom:none}
.hash{color:var(--muted);font-size:.74rem;font-family:ui-monospace,Consolas,monospace}
.notes{color:#334155;font-size:.82rem;margin-top:4px}

/* Buttons */
button,.btn{background:var(--accent);color:#fff;border:none;border-radius:9px;
  padding:9px 16px;font-size:.9rem;font-weight:600;cursor:pointer;display:inline-block}
button:hover,.btn:hover{background:var(--accent-d)}
.btn-sm{padding:5px 12px;font-size:.8rem;background:#475569}
.btn-sm:hover{background:#334155}
.btn-danger{background:var(--danger);padding:5px 12px;font-size:.8rem}
.btn-danger:hover{background:#b91c1c}

/* Forms */
form.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px;align-items:end}
form.grid .full{grid-column:1/-1}
form.grid button{grid-column:1/-1;justify-self:start}
label{display:flex;flex-direction:column;gap:5px;font-size:.85rem;color:var(--muted);font-weight:600}
input,select,textarea{font:inherit;color:var(--ink);background:#fff;
  border:1px solid #cbd5e1;border-radius:9px;padding:9px 11px;width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(13,148,136,.15)}

/* Flash */
.flash{padding:11px 15px;border-radius:10px;margin-bottom:16px;font-size:.9rem}
.flash.ok{background:#dcfce7;color:#166534;border:1px solid #86efac}
.flash.bad{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}

/* Badges */
.ok-badge{color:var(--ok);font-weight:600;font-size:.82rem}
.bad-badge{color:var(--danger);font-weight:600;font-size:.82rem}

/* Login */
.login-card{max-width:360px;margin:8vh auto;background:var(--card);border:1px solid var(--line);
  border-radius:16px;padding:32px 30px;box-shadow:0 6px 24px rgba(15,23,42,.08)}
.login-card h1{margin:0 0 4px;font-size:1.5rem}
.login-card p{margin:0 0 20px}
.login-card form{display:flex;flex-direction:column;gap:14px;margin-top:6px}
.login-card button{width:100%;padding:11px}

/* Footer */
.foot{text-align:center;color:var(--muted);font-size:.8rem;padding:24px 0 32px}

@media(max-width:640px){
  form.grid{grid-template-columns:1fr}
  .wrap{margin:18px auto}
}