:root { --text: #0f172a; --muted: #64748b; --line: #e2e8f0; --accent: #1d4ed8; --err: #b91c1c; --ok: #15803d; }
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--text);
  background: #0b1a33;
  background-image: radial-gradient(1200px 600px at 10% -10%, #1d4ed8 0%, transparent 60%),
                    radial-gradient(900px 500px at 110% 110%, #0e7490 0%, transparent 55%);
  display: grid; place-items: center; padding: 16px;
}
.shell { width: 100%; max-width: 420px; }
.brand { display: flex; align-items: center; gap: 12px; color: #fff; margin-bottom: 18px; justify-content: center; }
.brand .logo { width: 42px; height: 42px; border-radius: 12px; background: linear-gradient(135deg, #60a5fa, #22d3ee); display: grid; place-items: center; font-weight: 800; color: #0b1a33; font-size: 20px; }
.brand .t1 { font-weight: 700; font-size: 20px; }
.brand .t2 { font-size: 12.5px; opacity: .75; }
.card { background: #fff; border-radius: 18px; padding: 28px 26px; box-shadow: 0 24px 70px rgba(2, 6, 23, .45); }
h1 { font-size: 20px; margin: 0 0 4px; }
.lead { color: var(--muted); margin: 0 0 20px; font-size: 14px; }
label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
.inp { position: relative; }
input { width: 100%; height: 46px; border: 1px solid var(--line); border-radius: 12px; padding: 0 14px; font: inherit; background: #f8fafc; color: var(--text); outline: none; }
.inp input { padding-right: 70px; }
input:focus { border-color: #93c5fd; background: #fff; box-shadow: 0 0 0 4px rgba(29, 78, 216, .1); }
.toggle { position: absolute; right: 8px; top: 7px; height: 32px; border: 0; background: transparent; color: var(--muted); cursor: pointer; font: inherit; font-size: 13px; padding: 0 8px; }
.row { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; font-size: 13.5px; }
a { color: var(--accent); text-decoration: none; font-weight: 600; }
a:hover { text-decoration: underline; }
button.primary { width: 100%; height: 48px; margin-top: 20px; border: 0; border-radius: 12px; background: linear-gradient(135deg, #1d4ed8, #0e7490); color: #fff; font: inherit; font-weight: 700; cursor: pointer; }
button.primary:disabled { opacity: .6; cursor: progress; }
.msg { margin-top: 14px; padding: 10px 12px; border-radius: 10px; font-size: 14px; display: none; }
.msg.err { display: block; background: #fef2f2; color: var(--err); border: 1px solid #fecaca; }
.msg.ok { display: block; background: #f0fdf4; color: var(--ok); border: 1px solid #bbf7d0; }
.foot { text-align: center; color: rgba(255, 255, 255, .6); font-size: 12px; margin-top: 16px; }