:root { color-scheme: dark; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: #07110d; color: #effaf4; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 15% 10%, #123d2b 0, transparent 34%), radial-gradient(circle at 85% 90%, #103225 0, transparent 30%), #07110d; }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(100%, 430px); padding: 38px; border: 1px solid rgba(255,255,255,.09); border-radius: 24px; background: rgba(12,29,22,.92); box-shadow: 0 24px 80px rgba(0,0,0,.36); backdrop-filter: blur(14px); }
.brand { display: flex; align-items: center; gap: 13px; margin-bottom: 38px; }
.brand > span { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 14px; background: #25d366; color: #062d1a; font-size: 22px; font-weight: 900; box-shadow: 0 8px 28px rgba(37,211,102,.24); }
.brand div { display: grid; gap: 2px; }
.brand strong { font-size: 20px; letter-spacing: .04em; }
.brand small { color: #8ca99a; }
.intro p { color: #4ee38b; font-size: 11px; font-weight: 800; letter-spacing: .16em; margin: 0 0 9px; }
.intro h1 { font-size: clamp(30px, 7vw, 40px); margin: 0 0 10px; letter-spacing: -.04em; }
.intro > span { color: #a9beb3; line-height: 1.55; }
form { margin-top: 28px; display: grid; gap: 18px; }
label { display: grid; gap: 8px; color: #c6d8cf; font-size: 13px; font-weight: 700; }
input { width: 100%; border: 1px solid #29483a; border-radius: 12px; background: #0a1812; color: #f5fff9; font: inherit; padding: 14px 15px; outline: none; transition: border-color .2s, box-shadow .2s; }
input:focus { border-color: #25d366; box-shadow: 0 0 0 3px rgba(37,211,102,.13); }
button { border: 0; border-radius: 12px; padding: 14px; background: #25d366; color: #062d1a; font: inherit; font-weight: 850; cursor: pointer; transition: transform .15s, opacity .15s; }
button:hover { transform: translateY(-1px); }
button:disabled { opacity: .65; cursor: wait; transform: none; }
.error { margin: -5px 0 0; padding: 11px 13px; border-radius: 10px; background: rgba(244,72,72,.12); color: #ffaaaa; font-size: 13px; }
.security { margin: 24px 0 0; color: #789486; font-size: 12px; text-align: center; }
.security i { display: inline-block; width: 7px; height: 7px; margin-right: 5px; border-radius: 50%; background: #25d366; }
.hidden { display: none; }
@media (max-width: 520px) { .login-shell { padding: 0; } .login-card { min-height: 100vh; width: 100%; border: 0; border-radius: 0; padding: 30px 24px; display: flex; flex-direction: column; justify-content: center; } }