:root {
    --login-body-bg-light: radial-gradient(circle at 20% 20%, rgba(37, 99, 235, 0.15), transparent 55%), #f4f6fb;
    --login-body-bg-dark: radial-gradient(circle at 20% 20%, rgba(37, 99, 235, 0.25), transparent 55%), #050914;
    --login-panel-bg-light: rgba(255, 255, 255, 0.85);
    --login-panel-bg-dark: rgba(10, 18, 35, 0.75);
    --login-panel-border-light: rgba(148, 163, 184, 0.25);
    --login-panel-border-dark: rgba(148, 163, 184, 0.35);
    --login-text-secondary-light: rgba(71, 85, 105, 0.8);
    --login-text-secondary-dark: rgba(203, 213, 225, 0.85);
}

:root[data-theme='dark'] {
    --login-body-bg: var(--login-body-bg-dark);
    --login-panel-bg: var(--login-panel-bg-dark);
    --login-panel-border: var(--login-panel-border-dark);
    --login-text-secondary: var(--login-text-secondary-dark);
}

:root:not([data-theme='dark']) {
    --login-body-bg: var(--login-body-bg-light);
    --login-panel-bg: var(--login-panel-bg-light);
    --login-panel-border: var(--login-panel-border-light);
    --login-text-secondary: var(--login-text-secondary-light);
}

.auth-body {
    min-height: 100vh;
    background: var(--login-body-bg);
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(1.5rem, 4vw, 3rem);
    position: relative;
}

.auth-glow {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(circle at 80% 0%, rgba(14, 165, 233, 0.25), transparent 40%);
    opacity: 0.8;
}

.auth-container {
    position: relative;
    width: min(1100px, 100%);
    display: grid;
    grid-template-columns: minmax(260px, 1fr) minmax(320px, 480px);
    background: var(--login-panel-bg);
    border-radius: 32px;
    border: 1px solid var(--login-panel-border);
    box-shadow: 0 35px 100px rgba(15, 23, 42, 0.3);
    overflow: hidden;
}

.auth-showcase {
    padding: clamp(2rem, 3vw, 3rem);
    border-right: 1px solid var(--login-panel-border);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.logo-cluster {
    display: flex;
    align-items: center;
    gap: 0.9rem;
}

.logo-mark {
    width: 58px;
    height: 58px;
    border-radius: 18px;
    background: #1a1a1a; /* Solid dark color */
    display: grid;
    place-items: center;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: #fff;
    box-shadow: 0 22px 34px rgba(0, 0, 0, 0.15); /* Subtler shadow */
}

.logo-copy h1 {
    margin: 0.15rem 0 0;
    font-size: 2.1rem;
    color: var(--color-heading);
}

.logo-copy .subtitle {
    margin: 0;
    font-size: 0.85rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--login-text-secondary);
}

.showcase-lead {
    margin: 0;
    font-size: 1rem;
    color: var(--login-text-secondary);
}

.showcase-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    color: var(--login-text-secondary);
}

.showcase-grid li {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.showcase-grid span {
    color: var(--color-primary);
    font-size: 1.3rem;
}

.showcase-footer {
    margin-top: auto;
    font-size: 0.9rem;
    color: var(--login-text-secondary);
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.auth-panel {
    padding: clamp(2rem, 3vw, 3.25rem);
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    background: color-mix(in srgb, var(--login-panel-bg) 85%, transparent);
}

.auth-panel__head h2 {
    margin: 0.35rem 0 0;
    font-size: clamp(1.8rem, 2.3vw, 2.4rem);
    color: var(--color-heading);
}

.eyebrow {
    margin: 0;
    font-size: 0.85rem;
    letter-spacing: 0.18em;
    color: var(--login-text-secondary);
    text-transform: uppercase;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.auth-form label {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.95rem;
    color: var(--color-text);
    font-weight: 600;
}

.auth-form input {
    border-radius: 18px;
    border: 1px solid var(--login-panel-border);
    padding: 0.95rem 1.15rem;
    background: color-mix(in srgb, var(--color-surface) 90%, transparent);
    color: var(--color-text);
}

.auth-form input:focus {
    border-color: #1a1a1a;
    box-shadow: 0 0 0 2px rgba(26, 26, 26, 0.1);
}

.password-field {
    display: flex;
    align-items: center;
    border-radius: 18px;
    border: 1px solid var(--login-panel-border);
    background: color-mix(in srgb, var(--color-surface) 90%, transparent);
}

.password-field input {
    border: none;
    background: transparent;
    flex: 1;
    padding-right: 0;
}

.ghost-btn {
    border: none;
    background: none;
    color: var(--color-primary);
    cursor: pointer;
    border-radius: 999px;
    padding: 0.4rem 0.8rem;
    font-weight: 600;
}

.ghost-btn--outline {
    border: 1px solid var(--login-panel-border);
    padding: 0.6rem 1.25rem;
}

.ghost-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

.primary-btn {
    border: none;
    border-radius: 18px;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    background: #1a1a1a; /* Solid dark */
    color: #fff;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s, box-shadow 0.2s;
}

.primary-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.form-error {
    min-height: 1.2rem;
    font-size: 0.9rem;
    color: #f87171;
    margin: 0;
}

.auth-footer {
    border-top: 1px solid var(--login-panel-border);
    padding-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    color: var(--login-text-secondary);
}

@media (max-width: 960px) {
    .auth-container {
        grid-template-columns: 1fr;
        border-radius: 24px;
    }

    .auth-showcase {
        border-right: none;
        border-bottom: 1px solid var(--login-panel-border);
        gap: 1.25rem;
    }
}

@media (max-width: 640px) {
    .auth-body {
        padding: 1.5rem 1rem;
    }

    .auth-container {
        border-radius: 20px;
    }

    .auth-panel {
        padding: 1.5rem;
    }
}

/* 提示面板样式 */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay[data-modal-visible="true"] {
    opacity: 1;
    visibility: visible;
}

.modal-panel {
    position: relative;
    background: var(--login-panel-bg);
    border: 1px solid var(--login-panel-border);
    border-radius: 24px;
    box-shadow: 0 35px 100px rgba(15, 23, 42, 0.3);
    max-width: 480px;
    width: 100%;
    padding: 2rem 2.5rem;
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay[data-modal-visible="true"] .modal-panel {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    border: none;
    background: color-mix(in srgb, var(--color-surface) 90%, transparent);
    border-radius: 10px;
    color: var(--login-text-secondary);
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--color-surface);
    color: var(--color-text);
    transform: scale(1.05);
}

.modal-content {
    margin-top: 0.5rem;
    color: var(--color-text);
    line-height: 1.6;
    font-size: 1rem;
}

.modal-content p {
    margin: 0 0 1rem 0;
}

.modal-content p:last-child {
    margin-bottom: 0;
}

@media (max-width: 640px) {
    .modal-overlay {
        padding: 1rem;
    }

    .modal-panel {
        padding: 1.5rem;
        border-radius: 20px;
    }
}