*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Pretendard,"Noto Sans KR",Arial,sans-serif;color:#f5f7ff;background:#07111f}body{min-height:100vh;background:radial-gradient(circle at 18% 12%,#40205e 0,transparent 34%),radial-gradient(circle at 82% 82%,#152e59 0,transparent 36%),linear-gradient(145deg,#07111f,#11162b)}.auth-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-card{width:min(430px,100%);padding:38px 36px 32px;border:1px solid #4a3f6c;border-radius:22px;background:linear-gradient(155deg,rgba(24,29,53,.96),rgba(9,20,37,.98));box-shadow:0 28px 90px #000a;text-align:center}.auth-logo{width:68px;height:68px;margin:0 auto 14px;display:grid;place-items:center;border-radius:20px;background:linear-gradient(145deg,#ec4d9e,#7456df);font-size:34px;box-shadow:0 10px 35px #d34b9f55}.eyebrow{margin:0;color:#d490ff;font-size:11px;font-weight:900;letter-spacing:.18em}.auth-card h1{margin:9px 0 7px;font-size:28px}.subtitle{margin:0 0 24px;color:#9eabc0;font-size:14px}.auth-card form{display:grid;gap:15px;text-align:left}.auth-card label{display:grid;gap:7px;color:#dbe2ef;font-size:13px;font-weight:800}.auth-card input{width:100%;height:48px;padding:0 14px;border:1px solid #33445e;border-radius:11px;background:#081528;color:#fff;font-size:15px;outline:none}.auth-card input:focus{border-color:#b15ed4;box-shadow:0 0 0 3px #a74ec72b}.auth-card small{color:#8090a7;font-weight:500}.remember{display:flex!important;grid-template-columns:auto 1fr;align-items:center;justify-content:flex-start;gap:9px!important}.remember input{width:17px;height:17px}.auth-card button{height:50px;margin-top:4px;border:0;border-radius:11px;background:linear-gradient(100deg,#d43f91,#6758df);color:#fff;font-size:15px;font-weight:900;cursor:pointer}.auth-card button:hover{filter:brightness(1.08)}.error-box{margin:0 0 17px;padding:12px;border:1px solid #a34062;border-radius:10px;background:#351425;color:#ffadc5;font-size:13px;text-align:left}.auth-help,.security-note{margin:20px 0 0;color:#8290a4;font-size:12px;line-height:1.6}@media(max-width:520px){.auth-card{padding:30px 22px 25px;border-radius:17px}.auth-card h1{font-size:24px}}.auth-help a,.logout-link{color:#ffd4e8;font-weight:700;text-decoration:none}.auth-help a:hover,.logout-link:hover{text-decoration:underline}