:root { --ink:#16231e; --muted:#66736d; --green:#1d6b4f; --paper:#fbfdfb; --line:#d8e2dc; --coral:#b84d3d; }
* { box-sizing: border-box; }
body { margin:0; min-width:320px; min-height:100vh; display:grid; place-items:center; color:var(--ink); background:radial-gradient(circle at 80% 5%, #fff 0 7%, transparent 29%),linear-gradient(145deg,#eef4f0,#e8f0eb 58%,#f3f5f0); font-family:Inter,"Segoe UI",Arial,sans-serif; }
.login-shell { width:min(440px,calc(100% - 32px)); }
.login-card { background:rgba(251,253,251,.96); border:1px solid rgba(255,255,255,.9); border-radius:28px; padding:42px; box-shadow:0 24px 70px rgba(29,61,46,.12); }
.brand-mark { width:52px; height:52px; display:grid; place-items:center; color:var(--green); border:1px solid rgba(29,107,79,.15); border-radius:17px; }
.brand-mark svg { width:33px; height:33px; fill:none; stroke:currentColor; stroke-width:1.6; }
.eyebrow { margin:28px 0 8px; color:var(--green); font-size:11px; font-weight:700; letter-spacing:.15em; text-transform:uppercase; }
h1 { margin:0; font:500 42px/1.1 Georgia,"Times New Roman",serif; }
.intro { margin:14px 0 28px; color:var(--muted); line-height:1.55; }
label { display:block; margin-bottom:8px; font-size:13px; font-weight:700; }
input { width:100%; border:1px solid var(--line); border-radius:13px; padding:14px 15px; background:#fff; color:var(--ink); font:inherit; outline:none; }
input:focus { border-color:#72a38b; box-shadow:0 0 0 4px rgba(29,107,79,.09); }
button { width:100%; margin-top:15px; border:0; border-radius:14px; padding:14px; color:#fff; background:var(--green); font:700 15px/1.2 inherit; cursor:pointer; }
button:disabled { opacity:.55; cursor:wait; }
.message { min-height:20px; margin:14px 0 0; color:var(--coral); font-size:13px; line-height:1.45; }
@media (max-width:520px) { .login-card { padding:30px 24px; border-radius:22px; } h1 { font-size:36px; } }