:root { color-scheme: light; font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #17352f; background: #edf2ee; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 20% 0%, #f9fbf8 0, #edf2ee 42%, #dfe9e3 100%); }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(100%, 420px); padding: 42px; border: 1px solid rgba(21, 59, 53, .12); border-radius: 22px; background: rgba(255, 255, 255, .94); box-shadow: 0 24px 70px rgba(22, 52, 46, .13); }
.brand-mark { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 14px; color: #fff; background: #153b35; font-weight: 750; letter-spacing: -.04em; }
.eyebrow { margin: 28px 0 8px; color: #2d7468; font-size: 11px; font-weight: 750; letter-spacing: .18em; }
h1 { margin: 0; font-size: clamp(30px, 6vw, 40px); letter-spacing: -.045em; }
.intro { margin: 12px 0 30px; color: #667771; line-height: 1.65; }
form { display: grid; gap: 18px; }
label { display: grid; gap: 8px; color: #50645e; font-size: 13px; font-weight: 650; }
input { width: 100%; border: 1px solid #cbd8d2; border-radius: 11px; padding: 13px 14px; background: #fbfdfb; color: #17352f; font: inherit; outline: none; }
input:focus { border-color: #2d7468; box-shadow: 0 0 0 3px rgba(45, 116, 104, .12); }
button { border: 0; border-radius: 11px; padding: 13px 16px; background: #153b35; color: #fff; font: inherit; font-weight: 700; cursor: pointer; }
button:disabled { opacity: .62; cursor: wait; }
.error { margin: -4px 0 0; color: #a13232; font-size: 13px; }
.session-note { margin: 20px 0 0; color: #82908b; font-size: 12px; line-height: 1.5; }
@media (max-width: 520px) { .login-card { padding: 30px 24px; border-radius: 18px; } }