:root { color-scheme: dark; font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif; background: #0b1019; color: #ecf1f9; }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; min-height: 100vh; min-height: 100svh; background: radial-gradient(ellipse at 50% 0, #15263b 0, transparent 65%), #0b1019; }
.login-shell { width: min(100%, 460px); margin: 0 auto; padding: clamp(36px, 9vh, 100px) 20px 30px; }
.wordmark { display: flex; align-items: center; justify-content: center; gap: 9px; text-decoration: none; color: #edf4ff; font-size: 15px; letter-spacing: 2px; font-weight: 750; margin-bottom: 32px; }
.wordmark > span:last-child { color: #8596ae; font-size: 12px; font-weight: 500; letter-spacing: 1.5px; }
.brand-icon { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; color: #09242c; background: #64d5c2; font-size: 18px; letter-spacing: 0; margin-right: 4px; }
.login-card { padding: 32px; background: #121c2a; border: 1px solid #29354a; border-radius: 20px; box-shadow: 0 24px 80px #0004; }
.eyebrow { display: block; font-size: 12px; color: #78cabc; letter-spacing: 1px; margin-bottom: 10px; }
h1 { font-size: clamp(25px, 6vw, 29px); line-height: 1.3; letter-spacing: -.8px; margin: 0 0 10px; }
.intro { color: #9cacc2; font-size: 14px; line-height: 1.7; margin: 0 0 28px; }
.field { margin-bottom: 20px; }
.field label { display: block; margin-bottom: 8px; font-size: 13px; font-weight: 600; color: #d4ddec; }
input[type=text], input[type=password] { width: 100%; min-width: 0; min-height: 52px; padding: 14px; border: 1px solid #36445b; border-radius: 10px; background: #0d1521; color: #f3f7ff; font: inherit; font-size: 16px; }
input::placeholder { color: #71839d; font-size: 14px; }
input:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid #64d5c2; outline-offset: 3px; }
input:-webkit-autofill { -webkit-text-fill-color: #f3f7ff; box-shadow: 0 0 0 1000px #17283b inset; caret-color: #f3f7ff; }
.password-field { position: relative; }
.password-field input { padding-right: 65px; }
button { font: inherit; cursor: pointer; }
.reveal { position: absolute; top: 4px; right: 4px; min-width: 52px; min-height: 44px; background: transparent; color: #b4c4d9; border: 0; border-radius: 7px; font-size: 13px; }
.remember { display: flex; align-items: center; gap: 10px; min-height: 44px; font-size: 13px; color: #b7c4d7; cursor: pointer; margin: -4px 0 18px; }
.remember input { width: 18px; height: 18px; margin: 0; accent-color: #64d5c2; }
.submit { display: flex; align-items: center; justify-content: center; gap: 12px; width: 100%; min-height: 52px; padding: 13px 18px; border: 0; border-radius: 10px; background: #64d5c2; color: #0a2429; font-size: 16px; font-weight: 750; }
.submit:hover { background: #7ee1d0; }
.device-note { color: #8c9db5; font-size: 12px; text-align: center; line-height: 1.6; margin: 18px 0 0; }
.footer-note { display: flex; align-items: center; justify-content: center; gap: 7px; color: #8596ad; font-size: 12px; margin: 25px 0 0; }
.status-dot { width: 6px; height: 6px; background: #63cbb5; border-radius: 50%; }
.error { color: #ffd4d4; background: #60272b55; border: 1px solid #91545b; border-radius: 8px; padding: 12px; font-size: 13px; line-height: 1.6; margin: 0 0 22px; }
@media (max-width: 360px) { .login-shell { padding-inline: 14px; } .login-card { padding: 24px 20px; } }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto; } }