:root { color-scheme: dark; font-family: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif; background: #080b11; color: #f5f7fb; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: #080b11; }
body::before { content: ''; position: fixed; inset: 0; pointer-events: none; background: radial-gradient(ellipse at 18% 22%, #1e3a762e, transparent 38%), radial-gradient(ellipse at 88% 82%, #0a64a321, transparent 34%); }
.login-shell { position: relative; min-height: 100vh; display: grid; grid-template-columns: minmax(420px, 1.12fr) minmax(390px, .88fr); }
.brand { position: relative; display: flex; min-height: 100vh; flex-direction: column; justify-content: space-between; padding: clamp(40px, 6vw, 84px); overflow: hidden; border-right: 1px solid #ffffff0d; }
.brand::after { content: ''; position: absolute; width: 520px; height: 520px; left: -190px; bottom: -270px; border: 1px solid #477eff24; border-radius: 50%; box-shadow: 0 0 0 80px #477eff09, 0 0 0 160px #477eff08; }
.brand-lockup { display: flex; align-items: center; gap: 14px; font-size: 17px; letter-spacing: -.02em; }
.mark { width: 29px; height: 29px; display: grid; grid-template-columns: repeat(3, 1fr); align-items: end; gap: 3px; transform: skewY(-10deg); }
.mark span { display: block; background: linear-gradient(#78a0ff, #3c6ff5); border-radius: 2px; }.mark span:nth-child(1) { height: 46%; }.mark span:nth-child(2) { height: 72%; }.mark span:nth-child(3) { height: 100%; }
.brand-copy { position: relative; z-index: 1; max-width: 680px; }
h1 { margin: 0 0 28px; font-size: clamp(62px, 7vw, 106px); line-height: .91; letter-spacing: -.07em; font-weight: 720; }
.brand-copy p { max-width: 570px; margin: 0; color: #8d98aa; font-size: 17px; line-height: 1.7; }
.brand-foot { position: relative; z-index: 1; display: flex; align-items: center; gap: 9px; color: #7f899b; font-size: 13px; }.brand-foot i { width: 7px; height: 7px; border-radius: 50%; background: #40d69a; box-shadow: 0 0 14px #40d69a; }
.card-wrap { display: grid; place-items: center; padding: 36px; background: linear-gradient(150deg, #0d111a88, #080b11); }
.card { width: min(420px, 100%); padding: 38px; border: 1px solid #202a3a; border-radius: 18px; background: #10151eeb; box-shadow: 0 34px 100px #0009, inset 0 1px #ffffff08; }
.card-head h2 { margin: 0 0 9px; font-size: 32px; letter-spacing: -.04em; }.card-head p { margin: 0 0 34px; color: #7f899a; font-size: 14px; }
form { display: grid; gap: 20px; } label { display: grid; gap: 9px; color: #b4bcc9; font-size: 14px; font-weight: 620; }
input { width: 100%; border: 1px solid #2b3546; border-radius: 10px; outline: none; background: #090d14; color: #f5f7fb; padding: 14px 15px; font: inherit; transition: border-color .18s, box-shadow .18s; }
input:hover { border-color: #39465c; } input:focus { border-color: #5b86ff; box-shadow: 0 0 0 3px #4f7cff1d; }
button { margin-top: 6px; display: flex; justify-content: space-between; align-items: center; border: 0; border-radius: 10px; background: #4b78f6; color: white; padding: 14px 16px; font: inherit; font-weight: 720; cursor: pointer; box-shadow: 0 14px 32px #315bd530; transition: transform .18s, background .18s; }
button:hover { background: #5b86ff; transform: translateY(-1px); } button:disabled { opacity: .65; cursor: wait; transform: none; }.error { margin: -5px 0 0; padding: 11px 12px; border: 1px solid #713943; border-radius: 9px; background: #39191f; color: #ffadb4; font-size: 13px; }
@media (max-width: 800px) { .login-shell { grid-template-columns: 1fr; }.brand { min-height: auto; padding: 30px 24px 38px; border: 0; }.brand-copy { margin-top: 70px; }.brand-copy h1 { font-size: 54px; }.brand-copy p, .brand-foot { display: none; }.card-wrap { padding: 0 20px 48px; }.card { padding: 28px; } }