/* 登入頁專用樣式 — 僅由 auth/login.php 載入，作用範圍限 body.login-page */
body.login-page {
    --login-obsidian: #171516;
    --login-gold: #bc8d33;
    --login-flame: #e04a1c;
    --login-flame-deep: #c43312;
    --login-warm-bg: #f6f3ee;
    --login-warm-soft: #f8f5f0;
    --login-warm-panel: #f9f7f3;
    --login-border: #e4ded4;
    --login-white: #ffffff;
    --login-muted: #6b6560;
    --login-font: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
}
body.login-page *,
body.login-page *::before,
body.login-page *::after {
    box-sizing: border-box;
}
html:has(body.login-page),
body.login-page {
    width: 100%;
    min-height: 100%;
    margin: 0;
    font-family: var(--login-font);
    color: var(--login-obsidian);
    background: var(--login-warm-bg);
    -webkit-font-smoothing: antialiased;
}
body.login-page {
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    overflow-y: auto;
}
.login-page-root {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: clamp(1rem, 3vh, 2rem) 16px;
}
.login-shell {
    position: relative;
    width: min(92vw, 1120px);
    margin: 0 auto;
    isolation: isolate;
}

/* 柔和暈染層：與頁面暖白融合，不形成清楚長方形外框 */
.login-shell::before {
    content: "";
    position: absolute;
    inset: -10% -8%;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 78% 72% at 50% 48%, rgba(255, 253, 249, 0.35) 0%, transparent 72%);
    filter: blur(28px);
    opacity: 0.8;
}

.login-card {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 54% 46%;
    width: 100%;
    aspect-ratio: 2 / 1;
    min-height: 0;
    max-height: min(560px, 78vh);
    border-radius: 22px;
    border: 0;
    outline: none;
    background: transparent;
    box-shadow: none;
    overflow: hidden;
}
.login-brand {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1.75rem 2rem 2.5rem 1.75rem;
    background: transparent;
    color: var(--login-obsidian);
}
.login-brand__deco {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}
.login-brand__wheel {
    position: absolute;
    border-radius: 50%;
    opacity: 0.28;
    animation: login-wheel-spin 48s linear infinite;
}
.login-brand__wheel--a {
    width: min(78%, 460px);
    aspect-ratio: 1;
    left: -8%;
    top: -18%;
    border: 1px solid rgba(188, 141, 51, 0.22);
    background:
        radial-gradient(circle at center, transparent 54%, rgba(188, 141, 51, 0.07) 55%, transparent 58%),
        radial-gradient(circle at center, transparent 68%, rgba(160, 150, 135, 0.09) 69%, transparent 73%),
        radial-gradient(circle at center, transparent 82%, rgba(188, 141, 51, 0.05) 83%, transparent 86%);
}
.login-brand__streams {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 46%;
    opacity: 0.95;
    animation: login-stream-drift 16s ease-in-out infinite alternate;
}
.login-brand__divider {
    position: absolute;
    top: -6%;
    right: -1px;
    width: 28px;
    height: 112%;
    background:
        radial-gradient(ellipse 18px 58% at 0% 50%, transparent 62%, rgba(188, 141, 51, 0.55) 63%, rgba(196, 120, 40, 0.28) 68%, transparent 72%);
}
.login-brand__content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 92%;
    text-align: center;
}
.login-brand__logo-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
}
.login-brand__logo {
    display: block;
    width: min(92%, 460px);
    height: auto;
    max-height: none;
    object-fit: contain;
    background: transparent !important;
    border: 0 !important;
    box-shadow: none !important;
    outline: none;
}
.login-brand__company {
    margin: 0;
    font-size: clamp(0.88rem, 1.35vw, 1.02rem);
    font-weight: 500;
    letter-spacing: 0.42em;
    color: var(--login-obsidian);
    text-indent: 0.42em;
}
.login-brand__copyright {
    position: absolute;
    z-index: 2;
    left: 1.35rem;
    bottom: 1rem;
    margin: 0;
    font-size: 0.72rem;
    color: #8f897f;
    letter-spacing: 0.02em;
}
.login-form-panel {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(1.5rem, 3.5vw, 2.5rem) clamp(1.6rem, 4vw, 3.25rem);
    /* 接近頁面暖白，避免右側純白方塊 */
    background: transparent;
}
.login-form-panel__inner {
    width: 100%;
    max-width: 360px;
}
.login-form-panel__title {
    margin: 0 0 1.35rem;
    font-size: clamp(1.55rem, 2.2vw, 1.85rem);
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--login-obsidian);
}
.login-alert {
    margin: 0 0 1rem;
    padding: 0.7rem 0.85rem;
    border-radius: 9px;
    border: 1px solid #f0c9c0;
    background: #fff5f2;
    color: #9b2c1a;
    font-size: 0.9rem;
    line-height: 1.45;
}
.login-form {
    display: flex;
    flex-direction: column;
    gap: 0.95rem;
}
.login-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}
.login-field label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--login-obsidian);
}
.login-input-wrap {
    position: relative;
}
.login-page .login-input-wrap input {
    display: block;
    width: 100%;
    height: 48px;
    padding: 0 0.95rem;
    border: 1px solid var(--login-border);
    border-radius: 8px;
    background: #fff;
    color: var(--login-obsidian);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: border-color 180ms ease, box-shadow 180ms ease;
    box-shadow: none;
}
.login-page .login-input-wrap input::placeholder {
    color: #a39e97;
}
.login-page .login-input-wrap input:focus {
    border-color: var(--login-gold);
    box-shadow: 0 0 0 1px rgba(188, 141, 51, 0.18);
}
.login-input-wrap--password input {
    padding-right: 2.85rem;
}
.login-toggle-pwd {
    position: absolute;
    top: 50%;
    right: 0.35rem;
    transform: translateY(-50%);
    width: 2.25rem;
    height: 2.25rem;
    border: 0;
    background: transparent;
    color: #8a847c;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
}
.login-toggle-pwd:hover {
    color: var(--login-obsidian);
}
.login-toggle-pwd svg {
    width: 1.2rem;
    height: 1.2rem;
    fill: currentColor;
}
.login-form__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.05rem;
}
.login-remember {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.88rem;
    color: var(--login-muted);
    cursor: pointer;
    user-select: none;
}
.login-page .login-remember input {
    width: 1rem;
    height: 1rem;
    accent-color: var(--login-flame);
    margin: 0;
}
.login-forgot {
    font-size: 0.88rem;
    color: var(--login-gold);
    text-decoration: none;
    font-weight: 500;
}
.login-forgot:hover {
    text-decoration: underline;
}
.login-page .login-submit {
    display: block;
    width: 100%;
    height: 48px;
    margin-top: 0.45rem;
    border: 0;
    border-radius: 9px;
    background: linear-gradient(180deg, var(--login-flame) 0%, var(--login-flame-deep) 100%);
    color: #fff;
    font-family: inherit;
    font-size: 1.02rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    cursor: pointer;
    box-shadow: 0 8px 16px rgba(196, 51, 18, 0.24);
    transition: transform 160ms ease, box-shadow 160ms ease, filter 160ms ease;
}
.login-page .login-submit:hover {
    transform: translateY(-1px);
    filter: brightness(1.03);
    box-shadow: 0 10px 20px rgba(196, 51, 18, 0.28);
}
.login-page .login-submit:active {
    transform: scale(0.985);
    box-shadow: 0 4px 10px rgba(196, 51, 18, 0.2);
}
.login-mobile-copyright {
    display: none;
    margin: 1.1rem 0 0;
    text-align: center;
    font-size: 0.72rem;
    color: #8f897f;
}
@keyframes login-fade-up {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes login-wheel-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@keyframes login-stream-drift {
    from { transform: translateX(0); }
    to { transform: translateX(8px); }
}
@media (prefers-reduced-motion: reduce) {
    .login-brand__content,
    .login-form-panel,
    .login-brand__wheel,
    .login-brand__streams,
    .login-page .login-submit {
        animation: none !important;
        transition: none !important;
    }
    .login-page .login-submit:hover,
    .login-page .login-submit:active {
        transform: none;
    }
}
@media (max-width: 1024px) {
    .login-shell {
        width: min(94vw, 960px);
    }
    .login-card {
        max-height: min(520px, 80vh);
    }
    .login-brand {
        padding: 1.5rem 1.35rem 2.25rem;
    }
    .login-brand__logo {
        width: min(94%, 380px);
    }
    .login-form-panel {
        padding: 1.5rem 1.35rem;
    }
}
@media (max-width: 767px) {
    .login-page-root {
        justify-content: flex-start;
        padding: 16px 16px calc(16px + env(safe-area-inset-bottom, 0px));
    }
    .login-shell {
        width: 100%;
        max-width: none;
    }
    .login-shell::before {
        inset: -6% -3%;
        filter: blur(22px);
        opacity: 0.55;
    }

    .login-card {
        display: flex;
        flex-direction: column;
        aspect-ratio: auto;
        min-height: 0;
        max-height: none;
        width: 100%;
        border-radius: 18px;
        border: 0;
        background: transparent;
        box-shadow: none;
    }
    .login-brand {
        padding: 1.35rem 1rem 1rem;
        min-height: 0;
        background: transparent;
        border-bottom: 0;
    }
    .login-form-panel {
        padding: 1.1rem 1rem 1.35rem;
        background: transparent;
    }
    .login-brand__wheel {
        opacity: 0.14;
        animation: none;
    }
    .login-brand__wheel--a {
        width: 200px;
        left: -40px;
        top: -50px;
    }
    .login-brand__streams {
        height: 64px;
        opacity: 0.32;
        animation: none;
    }
    .login-brand__divider {
        display: none;
    }
    .login-brand__content {
        max-width: 100%;
    }
    .login-brand__logo {
        width: min(86vw, 300px);
    }
    .login-brand__company {
        font-size: 0.82rem;
        letter-spacing: 0.28em;
        text-indent: 0.28em;
    }
    .login-brand__copyright {
        display: none;
    }
    .login-form-panel__inner {
        max-width: none;
    }
    .login-form-panel__title {
        margin-bottom: 1.05rem;
        font-size: 1.4rem;
        text-align: left;
    }
    .login-page .login-input-wrap input,
    .login-page .login-submit {
        height: 52px;
        font-size: 16px;
    }
    .login-form__row {
        flex-wrap: nowrap;
    }
    .login-mobile-copyright {
        display: block;
    }
}
@media (max-width: 360px) {
    .login-form__row {
        flex-wrap: wrap;
    }
    .login-brand__company {
        letter-spacing: 0.16em;
        text-indent: 0.16em;
    }
}