*{box-sizing:border-box}
:root{--login-navy:#172b49;--login-navy-2:#294b72;--login-teal:#2f707a;--login-line:#d5deea;--login-ink:#18263f;--login-muted:#65718a}
html,body{min-height:100%;margin:0}
body.mercantico-login-page{
  min-height:100vh;display:flex;align-items:center;justify-content:center;padding:28px 18px;overflow-x:hidden;
  font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  background:radial-gradient(circle at 12% 12%,rgba(47,112,122,.18),transparent 25rem),radial-gradient(circle at 86% 86%,rgba(74,101,135,.18),transparent 28rem),linear-gradient(135deg,#102038 0%,#1b3150 52%,#263f61 100%);
  color:var(--login-ink)
}
.login-watermark{position:fixed;left:clamp(18px,5vw,80px);bottom:clamp(18px,5vw,70px);width:clamp(170px,25vw,360px);opacity:.055;filter:grayscale(1) brightness(2.2);pointer-events:none}
.login-watermark img{display:block;width:100%;height:auto}
.login-shell{position:relative;z-index:1;width:min(100%,430px)}
.login-card{
  position:relative;width:100%;margin:0;padding:30px 30px 28px;border-radius:26px;background:rgba(255,255,255,.98);border:1px solid rgba(255,255,255,.58);
  box-shadow:0 28px 70px rgba(5,17,34,.30);overflow:hidden
}
.login-accent{position:absolute;left:0;right:0;top:0;height:5px;background:linear-gradient(90deg,var(--login-navy),var(--login-teal))}
.login-logo-wrap{
  width:92px;height:92px;margin:0 auto 18px;display:flex;align-items:center;justify-content:center;border-radius:22px;background:#fff;border:1px solid var(--login-line);
  box-shadow:0 12px 28px rgba(20,38,68,.11);overflow:hidden
}
.login-logo{display:block;max-width:82%;max-height:82%;width:auto;height:auto;object-fit:contain}
.login-heading{text-align:center;margin-bottom:24px}
.login-heading h1{margin:0;color:var(--login-ink);font-size:34px;line-height:1.05;font-weight:900;letter-spacing:-.04em}
.login-heading p{margin:8px 0 0;color:var(--login-muted);font-size:14px;font-weight:750}
.login-card label{display:block;margin:0 0 7px;color:var(--login-ink);font-size:14px;font-weight:850}
.login-card input{
  display:block;width:100%;min-height:50px;margin:0 0 17px;padding:12px 14px;border:1px solid var(--login-line);border-radius:13px;background:#fff;color:var(--login-ink);
  font:inherit;box-shadow:inset 0 1px 2px rgba(15,30,52,.04);outline:none
}
.login-card input:focus{border-color:#557798;box-shadow:0 0 0 4px rgba(46,82,120,.12)}
.login-card button{
  width:100%;min-height:52px;margin-top:3px;padding:12px 18px;border:1px solid rgba(21,49,82,.28);border-radius:13px;background:linear-gradient(135deg,var(--login-navy),var(--login-navy-2));
  color:#fff;font:inherit;font-weight:850;cursor:pointer;box-shadow:0 10px 22px rgba(23,43,73,.20);transition:transform .15s ease,box-shadow .15s ease,background .15s ease
}
.login-card button:hover{background:linear-gradient(135deg,#1d3558,#31577e);transform:translateY(-1px);box-shadow:0 14px 28px rgba(23,43,73,.24)}
.login-flash{margin:0 0 16px;padding:11px 13px;border-radius:12px;border:1px solid #edc4cd;background:#fff4f6;color:#8a2d42;font-size:14px;font-weight:750}
@media(max-width:520px){
  body.mercantico-login-page{padding:18px 12px}.login-card{padding:26px 20px 22px;border-radius:22px}.login-logo-wrap{width:82px;height:82px;border-radius:19px}
  .login-heading h1{font-size:30px}.login-watermark{width:220px;left:50%;transform:translateX(-50%);opacity:.04}
}