:root{--ink:#18373a;--lake:#0b6973;--deep:#083e44;--sun:#efb64d}
*{box-sizing:border-box}
html,body{min-height:100%}
body{margin:0;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 78% 18%,rgba(255,255,255,.22),transparent 20%),linear-gradient(145deg,#073e44,#0b6973 56%,#88aaa5);color:#fff;font:16px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
.login-card{width:min(460px,100%);padding:34px;border:1px solid rgba(255,255,255,.25);border-radius:28px;background:rgba(255,255,255,.13);backdrop-filter:blur(16px);box-shadow:0 28px 90px rgba(0,0,0,.25)}
.brand{font-weight:900;letter-spacing:.08em;margin-bottom:24px}.brand b{color:#ffd77f}
h1{font-size:clamp(2.2rem,8vw,3.5rem);line-height:1;margin:.2em 0 .35em;letter-spacing:-.05em}
p{color:rgba(255,255,255,.82)}
.field{display:grid;gap:8px;margin-top:24px}.field label{font-weight:850}.field input{width:100%;padding:14px 15px;border:1px solid rgba(255,255,255,.35);border-radius:14px;background:rgba(255,255,255,.96);color:var(--ink);outline:none}.field input:focus{box-shadow:0 0 0 4px rgba(239,182,77,.3);border-color:#ffd77f}
button{width:100%;margin-top:14px;padding:13px 16px;border:0;border-radius:999px;background:var(--sun);color:var(--ink);font-weight:900;cursor:pointer}button:hover,button:focus{filter:brightness(1.05);outline:3px solid rgba(255,255,255,.5);outline-offset:2px}
.error{padding:11px 13px;border-radius:12px;background:rgba(108,20,20,.35);color:#ffe5e1;font-weight:800}.note{font-size:.8rem;color:rgba(255,255,255,.66)}