:root{
  --auth-primary:#ff3d5a;
  --auth-secondary:#22d3ee;
  --auth-violet:#a78bfa;
  --auth-radius:22px;
}
:root[data-auth-theme="dark"]{
  --auth-bg:#0a0d17;
  --auth-bg-soft:#0f1422;
  --auth-card:#141a2b;
  --auth-card-soft:#1a2137;
  --auth-text:#eaedf7;
  --auth-muted:#9299b2;
  --auth-border:rgba(255,255,255,.09);
  --auth-input:#0f1422;
  --auth-shadow:0 30px 90px rgba(0,0,0,.48);
  --auth-top:rgba(10,13,23,.82);
}
:root[data-auth-theme="light"]{
  --auth-bg:#eef1f8;
  --auth-bg-soft:#f7f8fc;
  --auth-card:#ffffff;
  --auth-card-soft:#f4f6fb;
  --auth-text:#141a2b;
  --auth-muted:#626b86;
  --auth-border:rgba(20,26,43,.12);
  --auth-input:#f6f7fb;
  --auth-shadow:0 26px 70px rgba(28,36,66,.16);
  --auth-top:rgba(255,255,255,.82);
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
body.auth-page{min-height:100vh;background:radial-gradient(900px 500px at 85% -10%,rgba(167,139,250,.18),transparent 60%),radial-gradient(900px 500px at -10% 5%,rgba(34,211,238,.14),transparent 60%),var(--auth-bg);color:var(--auth-text);padding:0;display:block;transition:background .25s ease,color .25s ease}
a{color:inherit}
.auth-topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:14px;padding:14px clamp(16px,4vw,46px);border-bottom:1px solid var(--auth-border);background:var(--auth-top);backdrop-filter:blur(18px)}
.auth-brand{display:flex;align-items:center;gap:11px;text-decoration:none;min-width:0}
.auth-brand-mark{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,var(--auth-primary),#ff6b4a);color:#fff;box-shadow:0 10px 24px rgba(255,61,90,.28)}
.auth-brand-mark i{font-size:18px}
.auth-brand-copy{min-width:0}
.auth-brand-copy strong{display:block;font-family:"Space Grotesk",Inter,sans-serif;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.auth-brand-copy span{display:block;color:var(--auth-muted);font-size:11px;margin-top:2px}
.auth-top-spacer{flex:1}
.auth-back-link,.auth-theme-toggle{height:42px;border:1px solid var(--auth-border);background:var(--auth-card);color:var(--auth-text);border-radius:12px;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font:600 12px Inter,sans-serif}
.auth-back-link{padding:0 14px}
.auth-theme-toggle{width:42px;cursor:pointer}
.auth-shell{width:min(1120px,calc(100% - 32px));min-height:680px;margin:clamp(22px,5vh,54px) auto;display:grid;grid-template-columns:minmax(0,1.02fr) minmax(360px,.98fr);background:var(--auth-card);border:1px solid var(--auth-border);border-radius:var(--auth-radius);overflow:hidden;box-shadow:var(--auth-shadow)}
.auth-form-panel{padding:clamp(28px,5vw,64px);display:flex;flex-direction:column;justify-content:center;min-width:0}
.auth-heading{margin-bottom:26px}
.auth-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 10px;border-radius:999px;background:rgba(34,211,238,.11);color:var(--auth-secondary);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:16px}
.auth-heading h1{font-family:"Space Grotesk",Inter,sans-serif;font-size:clamp(28px,4vw,42px);line-height:1.06;letter-spacing:-1.1px;margin:0 0 10px;color:var(--auth-text)}
.auth-heading p{margin:0;color:var(--auth-muted);font-size:14px;line-height:1.65;max-width:520px}
.alert-auth{padding:13px 15px;border-radius:12px;font-size:13px;margin-bottom:18px;background:rgba(255,61,90,.11);color:#ff7187;border:1px solid rgba(255,61,90,.34);line-height:1.5}
.social-login-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:20px}
.social-auth-btn{min-height:46px;border-radius:12px;border:1px solid var(--auth-border);background:var(--auth-card-soft);color:var(--auth-text);display:flex;align-items:center;justify-content:center;gap:9px;text-decoration:none;font-size:12px;font-weight:700;padding:10px;transition:transform .18s ease,border-color .18s ease,background .18s ease}
.social-auth-btn:hover{transform:translateY(-2px);border-color:rgba(34,211,238,.48)}
.social-auth-btn.google i{color:#ea4335}
.social-auth-btn.facebook i{color:#1877f2}
.social-auth-btn.tiktok i{color:var(--auth-text)}
.auth-divider{display:flex;align-items:center;gap:12px;color:var(--auth-muted);font-size:11px;margin:2px 0 20px}
.auth-divider:before,.auth-divider:after{content:"";height:1px;background:var(--auth-border);flex:1}
.auth-form{display:grid;gap:16px}
.auth-form .form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.auth-form .form-group{position:relative;margin:0;min-width:0}
.auth-form .form-group label{display:block;margin:0 0 8px;color:var(--auth-text);font-size:12px;font-weight:650}
.auth-form .input-icon{position:absolute;left:14px;bottom:15px;color:var(--auth-muted);font-size:14px;pointer-events:none}
.auth-form .form-control{width:100%;height:48px;padding:0 14px 0 42px;border:1px solid var(--auth-border);border-radius:12px;background:var(--auth-input);color:var(--auth-text);font:500 14px Inter,sans-serif;outline:none;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease}
.auth-form .form-control::placeholder{color:var(--auth-muted);opacity:.72}
.auth-form .form-control:focus{border-color:rgba(34,211,238,.62);box-shadow:0 0 0 4px rgba(34,211,238,.10)}
.auth-checkbox{display:flex;align-items:flex-start;gap:11px;padding:4px 0}
.auth-checkbox input{width:19px;height:19px;margin:1px 0 0;accent-color:var(--auth-primary);flex:none}
.auth-checkbox label{font-size:12px;color:var(--auth-muted);line-height:1.55}
.auth-checkbox a{color:var(--auth-secondary);font-weight:700;text-decoration:none}
.btn-submit{width:100%;min-height:49px;padding:12px 18px;border:0;border-radius:12px;background:linear-gradient(135deg,var(--auth-primary),#ff6b4a);color:#fff;font:700 14px Inter,sans-serif;cursor:pointer;box-shadow:0 12px 25px rgba(255,61,90,.24);transition:transform .18s ease,filter .18s ease}
.btn-submit:hover{transform:translateY(-2px);filter:brightness(1.05)}
.auth-footer{text-align:center;margin-top:22px;color:var(--auth-muted);font-size:12px}
.auth-footer a{color:var(--auth-secondary);font-weight:750;text-decoration:none}
.auth-visual{position:relative;min-height:100%;display:flex;align-items:flex-end;padding:clamp(30px,5vw,58px);background:linear-gradient(155deg,rgba(10,13,23,.16),rgba(10,13,23,.8)),radial-gradient(circle at 18% 12%,rgba(34,211,238,.44),transparent 34%),radial-gradient(circle at 80% 22%,rgba(167,139,250,.58),transparent 38%),linear-gradient(135deg,#151b31,#222b4c);overflow:hidden}
.auth-visual:before{content:"";position:absolute;width:440px;height:440px;border-radius:50%;right:-170px;top:-170px;border:70px solid rgba(255,255,255,.055)}
.auth-visual:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,#000,transparent 88%)}
.auth-visual-content{position:relative;z-index:2;color:#fff;max-width:420px}
.auth-visual-icon{width:58px;height:58px;border-radius:17px;display:grid;place-items:center;background:linear-gradient(135deg,var(--auth-violet),#7c3aed);box-shadow:0 14px 30px rgba(124,58,237,.34);margin-bottom:22px;font-size:23px}
.auth-visual-content h2{font-family:"Space Grotesk",Inter,sans-serif;font-size:clamp(27px,3.5vw,44px);line-height:1.06;letter-spacing:-1.2px;margin:0 0 13px}
.auth-visual-content p{margin:0;color:rgba(255,255,255,.78);font-size:14px;line-height:1.7}
.auth-feature-list{display:grid;gap:11px;margin-top:28px}
.auth-feature{display:flex;align-items:center;gap:10px;font-size:12px;color:rgba(255,255,255,.82)}
.auth-feature i{width:25px;height:25px;border-radius:8px;display:grid;place-items:center;background:rgba(52,211,153,.18);color:#34d399;font-size:11px}
@media(max-width:900px){
  .auth-shell{grid-template-columns:1fr;min-height:0;max-width:620px}
  .auth-visual{min-height:300px;order:-1}
}
@media(max-width:620px){
  .auth-topbar{padding:11px 14px}
  .auth-brand-copy span,.auth-back-link span{display:none}
  .auth-back-link{width:42px;padding:0}
  .auth-shell{width:calc(100% - 20px);margin:14px auto 28px;border-radius:17px}
  .auth-form-panel{padding:26px 18px 30px}
  .auth-visual{min-height:230px;padding:26px 22px}
  .auth-feature-list{display:none}
  .social-login-grid{grid-template-columns:1fr}
  .auth-form .form-row{grid-template-columns:1fr}
  .auth-heading h1{font-size:29px}
}