:root{
  --bg:#f7f8fc;--panel:rgba(255,255,255,.88);--surface:#fff;--text:#101426;
  --muted:#667085;--border:rgba(20,27,48,.1);--primary:#5b5cf6;--primary2:#7c3aed;
  --danger:#e5484d;--success:#24b47e;--shadow:0 24px 80px rgba(37,43,82,.12)
}
[data-theme="dark"]{
  --bg:#0b0e17;--panel:rgba(17,21,34,.9);--surface:#111522;--text:#f4f6fb;
  --muted:#98a2b3;--border:rgba(255,255,255,.09);--shadow:0 24px 80px rgba(0,0,0,.34)
}
*{box-sizing:border-box}
html,body{min-height:100%}
body{
  margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:
    radial-gradient(circle at 18% 14%,rgba(91,92,246,.14),transparent 32%),
    radial-gradient(circle at 82% 88%,rgba(59,130,246,.1),transparent 30%),
    var(--bg);color:var(--text)
}
a{text-decoration:none;color:inherit}
.auth-shell{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr}
.auth-brand{
  padding:48px clamp(36px,6vw,86px);display:flex;flex-direction:column;justify-content:space-between;
  border-right:1px solid var(--border);position:relative;overflow:hidden
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.03em;width:max-content}
.brand img{width:34px;height:34px;object-fit:contain}
.brand span span{color:var(--primary)}
.auth-copy{max-width:620px;margin:auto 0}
.kicker{font-size:12px;font-weight:800;letter-spacing:.14em;color:var(--primary)}
.auth-copy h1{font-size:clamp(44px,5.7vw,78px);line-height:1.02;letter-spacing:-.055em;margin:16px 0 20px}
.gradient{background:linear-gradient(90deg,#5758ee,#7757ef 55%,#3b82f6);-webkit-background-clip:text;background-clip:text;color:transparent}
.auth-copy p{font-size:17px;line-height:1.75;color:var(--muted);max-width:560px}
.trust-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;color:var(--muted);font-size:12px}
.trust-row span{padding:8px 11px;border:1px solid var(--border);border-radius:999px;background:var(--panel)}
.auth-footer{color:var(--muted);font-size:11px}
.auth-main{display:grid;place-items:center;padding:28px}
.auth-card{
  width:min(100%,460px);padding:34px;border:1px solid var(--border);border-radius:26px;
  background:var(--panel);backdrop-filter:blur(18px);box-shadow:var(--shadow)
}
.auth-card h2{font-size:30px;letter-spacing:-.035em;margin:0 0 8px}
.auth-card>p{color:var(--muted);line-height:1.6;margin:0 0 26px;font-size:14px}
.form-group{display:grid;gap:8px;margin-bottom:16px}
label{font-size:12px;font-weight:700}
.input-wrap{position:relative}
input{
  width:100%;height:50px;border:1px solid var(--border);border-radius:14px;background:var(--surface);
  color:var(--text);padding:0 14px;outline:none;font-size:14px;transition:border .18s,box-shadow .18s
}
input:focus{border-color:rgba(91,92,246,.6);box-shadow:0 0 0 4px rgba(91,92,246,.1)}
.help{color:var(--muted);font-size:11px;line-height:1.5}
.password-btn{
  position:absolute;right:8px;top:8px;height:34px;border:0;border-radius:9px;background:transparent;
  color:var(--muted);cursor:pointer;padding:0 9px;font-size:11px;font-weight:700
}
.auth-btn{
  width:100%;height:50px;border:0;border-radius:14px;background:linear-gradient(135deg,var(--primary),#6d5ff8 55%,var(--primary2));
  color:#fff;font-weight:800;cursor:pointer;box-shadow:0 12px 28px rgba(91,92,246,.25);margin-top:4px
}
.auth-btn:disabled{opacity:.65;cursor:wait}
.form-message{display:none;padding:11px 12px;border-radius:12px;margin:0 0 14px;font-size:12px;line-height:1.5}
.form-message.error{display:block;color:#c2343a;background:rgba(229,72,77,.09);border:1px solid rgba(229,72,77,.18)}
.form-message.success{display:block;color:#13845a;background:rgba(36,180,126,.09);border:1px solid rgba(36,180,126,.18)}
.switch{text-align:center;color:var(--muted);font-size:12px;margin-top:20px}
.switch a{color:var(--primary);font-weight:800}
.back-home{display:inline-flex;margin-bottom:22px;color:var(--muted);font-size:12px}
.back-home:hover{color:var(--text)}
@media(max-width:900px){
  .auth-shell{grid-template-columns:1fr}
  .auth-brand{min-height:auto;padding:24px 22px 30px;border-right:0;border-bottom:1px solid var(--border)}
  .auth-copy{margin:40px 0 0}
  .auth-copy h1{font-size:clamp(38px,10vw,58px)}
  .auth-copy p,.trust-row,.auth-footer{display:none}
  .auth-main{padding:26px 16px 40px}
}
@media(max-width:480px){
  .auth-brand{padding:18px 16px 24px}
  .auth-copy{margin-top:30px}
  .auth-card{padding:24px 18px;border-radius:22px}
  .auth-card h2{font-size:26px}
}