@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;600;700&family=Noto+Serif+Display:wght@500;600;700&display=swap');

/* Overrides the legacy LINE login stylesheet with the admin's indigo light theme. */
:root { --login-brand: #5268A6; --login-brand-strong: #1F3268; --login-action: #435A9C; --login-border: #D7DEEF; --login-bg: #F7F9FD; --login-soft: #EEF2FF; }
body.login-page { min-height: 100dvh; margin: 0; padding: 1.5rem; overflow: auto; background: radial-gradient(circle at 16% 12%, rgba(123,143,207,.18), transparent 24rem), radial-gradient(circle at 88% 84%, rgba(185,195,235,.3), transparent 28rem), linear-gradient(135deg, #FBFCFF, var(--login-bg) 56%, #FFFFFF); color: #2F3D61; font-family: 'Noto Sans TC', 'Microsoft JhengHei', sans-serif; }
body.login-page::before, body.login-page::after { position: fixed; z-index: 0; width: 28rem; height: 28rem; border: 1px solid rgba(82,104,166,.12); border-radius: 50%; content: ''; pointer-events: none; }
body.login-page::before { top: -16rem; right: -8rem; }
body.login-page::after { bottom: -19rem; left: -10rem; }
.login-card { position: relative; z-index: 1; width: min(100%, 26rem); margin: max(7vh, 2.5rem) auto; padding: clamp(2rem, 5vw, 3rem); border: 1px solid rgba(215,222,239,.95); border-radius: 1.75rem; background: rgba(255,255,255,.92); box-shadow: 0 1.5rem 4rem rgba(39,55,103,.14); text-align: center; backdrop-filter: blur(14px); }
.login-logo { display: block; width: min(12.2rem, 72%); height: auto; margin: 0 auto 1.7rem; opacity: 1; filter: none; }
.login-card h2 { margin: 0; color: var(--login-brand-strong); font-family: 'Noto Serif Display', 'Noto Serif TC', serif; font-size: clamp(1.7rem, 5vw, 2rem); font-weight: 700; letter-spacing: .12em; line-height: 1.35; }
.login-card h2 i { margin-right: .55rem; color: var(--login-action); font-family: inherit; font-size: .85em; }
.login-card p { margin: .55rem 0 2rem; color: var(--login-brand); font-size: .72rem; font-weight: 700; letter-spacing: .18em; }
.form-group { margin: 0 0 1.2rem; text-align: left; }
.form-group label { display: block; margin: 0 0 .55rem; color: var(--login-brand-strong); font-size: .8rem; font-weight: 700; letter-spacing: .04em; }
.form-group label i { margin-right: .4rem; color: var(--login-action); }
.form-control { display: block; width: 100%; min-height: 3.2rem; padding: .75rem 1rem; border: 1px solid var(--login-border); border-radius: .875rem; outline: none; background: #fff; color: #2F3D61!important; font-size: 1rem; font-weight: 600; transition: border-color .2s ease, box-shadow .2s ease, background .2s ease; }
.form-control::placeholder { color: #8B96AF; font-weight: 400; }
.form-control:focus { border-color: var(--login-action); background: #FCFDFF; box-shadow: 0 0 0 .22rem rgba(67,90,156,.14); }
.btn-premium { display: block; width: 100%; min-height: 3.2rem; margin: .35rem auto 0; padding: .75rem 1rem; border: 0; border-radius: .875rem; background: linear-gradient(135deg, #5268A6, #435A9C); box-shadow: 0 .55rem 1.3rem rgba(67,90,156,.24); color: #fff; cursor: pointer; font-size: .95rem; font-weight: 700; letter-spacing: .12em; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.btn-premium:hover { transform: translateY(-2px); background: linear-gradient(135deg, #435A9C, #344B83); box-shadow: 0 .8rem 1.65rem rgba(67,90,156,.3); }
.btn-premium:focus-visible, .login-back:focus-visible { outline: .2rem solid #234FBD; outline-offset: .2rem; }
#login-error { display: block; margin: 0 0 1.2rem; padding: .75rem .85rem; border: 1px solid rgba(182,63,80,.28); border-radius: .75rem; background: #FFF0F2; color: #B63F50; font-size: .82rem; text-align: left; }
.login-back { display: inline-flex; align-items: center; gap: .45rem; margin-top: 1.45rem; color: #5F6C8A; font-size: .8rem; font-weight: 600; text-decoration: none; transition: color .2s ease; }
.login-back:hover { color: var(--login-action); }
@media (max-width: 35.9rem) { body.login-page { padding: 1rem; } .login-card { margin: 1.5rem auto; padding: 2rem 1.4rem; border-radius: 1.35rem; } .login-logo { margin-bottom: 1.35rem; } }