:root{color-scheme:dark;--auth-bg:#08090b;--auth-surface:#111214;--auth-line:#2c2e33;--auth-text:#eef0f5;--auth-muted:#9b9eaa;--auth-link:#d8e2ff;--auth-accent:#b8caff}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:system-ui,-apple-system,'Segoe UI','Malgun Gothic','Noto Sans KR',sans-serif;background:var(--auth-bg);color:var(--auth-text)}
body.auth-page{min-height:100vh}
.auth-shell{width:min(100% - 32px,384px);margin:0 auto;padding-top:24px;padding-bottom:48px}
.auth-locale{display:flex;justify-content:flex-end;margin-bottom:34px}
.auth-locale select{height:38px;width:154px;padding:0 12px;border:1px solid #2f3239;border-radius:11px;background:#101214;color:#f0f1f3;font-size:12px;font-weight:600;outline:none;cursor:pointer}
.auth-locale select:focus-visible,.auth-form input:focus-visible{border-color:#6b7c9f;box-shadow:0 0 0 2px rgba(130,160,210,.16)}
.auth-intro{text-align:center;margin-bottom:32px}
.auth-intro h1{margin:0 0 10px;font-size:24px;font-weight:800;letter-spacing:-.03em}
.auth-intro p{font-size:12px;font-weight:400;margin:0;color:#a3acc0;line-height:1.7}
.auth-form{display:flex;flex-direction:column;gap:13px}
.auth-form input{width:100%;height:52px;background:#111214;border:1px solid #292b31;border-radius:11px;color:#f6f7fc;padding:0 15px;font-size:14px;outline:none}
.auth-form input::placeholder{color:#6b7790;opacity:1}
.auth-primary{display:flex;align-items:center;justify-content:center;text-align:center;text-decoration:none;width:100%;height:52px;border:1px solid #373a42;border-radius:11px;background:#181a1d;color:#f0f2f8;font-size:14px;font-weight:700;margin-top:2px;cursor:pointer;transition:background .15s,border-color .15s}
.auth-primary:hover{background:#22252b;border-color:#515965;color:#fff}
.auth-alternate{text-align:center;font-size:12px;color:#9095a3;margin-top:24px}
.auth-alternate a,.auth-footer a,.upgrade-wrap a{color:#dce5ff;font-weight:700;text-decoration:none;margin-left:5px}
.auth-alternate a:hover,.upgrade-wrap a:hover{text-decoration:underline}
.auth-footer{text-align:center;margin:46px 0 0;font-size:11px;color:#7e838d;line-height:1.8}
.alert{padding:12px 14px;border-radius:9px;margin:0 0 16px;font-size:13px;line-height:1.5}
.alert-error{color:#ffc3ca;background:#381e25;border:1px solid #764350}
.alert-ok{color:#c0efd2;background:#193126;border:1px solid #345543}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.upgrade-wrap{max-width:560px;margin:10vh auto;padding:30px 24px;background:#111318;border:1px solid #30343c;border-radius:14px}
.upgrade-wrap h1{font-size:23px}.upgrade-wrap p{color:#afb6c4;line-height:1.8;font-size:14px}.upgrade-wrap .auth-note{font-size:12px;margin-top:26px}
@media(max-width:500px){.auth-shell{padding-top:20px}.auth-locale{margin-bottom:38px}.auth-intro{margin-bottom:28px}}