:root {
    --portal-bg: #f8f9fb;
    --portal-surface: #ffffff;
    --portal-border: #e2e6ec;
    --portal-border-strong: #cfd6df;
    --portal-text: #1a1f2c;
    --portal-text-secondary: #4b5565;
    --portal-text-muted: #6b7280;
    --portal-primary: #1f2937;
    --portal-primary-hover: #111827;
    --portal-accent: #2d5a3d;
    --portal-accent-soft: #eef4f0;
    --portal-max: 960px;
    --portal-radius: 6px;
    --portal-shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 8px 24px rgba(16, 24, 40, 0.08);
}

* { box-sizing: border-box; }

.auth-portal-body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    color: var(--portal-text);
    background: var(--portal-bg);
    -webkit-font-smoothing: antialiased;
}

.portal-scene {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
}

.portal-bg { display: none; }

.portal-shell {
    width: min(var(--portal-max), 100%);
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 0;
    align-items: stretch;
    background: var(--portal-surface);
    border: 1px solid var(--portal-border);
    border-radius: var(--portal-radius);
    box-shadow: var(--portal-shadow);
    overflow: hidden;
}

.portal-showcase {
    padding: 2.75rem 2.5rem;
    background: var(--portal-accent-soft);
    border-right: 1px solid var(--portal-border);
}

.portal-badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--portal-accent);
    margin-bottom: 1.25rem;
}

.portal-badge i { display: none; }

.portal-showcase h1 {
    margin: 0 0 1rem;
    font-family: Georgia, 'Times New Roman', serif;
    font-size: clamp(1.65rem, 3vw, 2.15rem);
    line-height: 1.2;
    font-weight: 700;
    color: var(--portal-text);
}

.portal-showcase h1 span {
    color: var(--portal-text);
}

.portal-showcase > p {
    margin: 0 0 2rem;
    max-width: 38ch;
    color: var(--portal-text-secondary);
    font-size: 0.975rem;
    line-height: 1.7;
}

.portal-features {
    display: grid;
    gap: 0.85rem;
}

.portal-feature {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 0.85rem 0;
    border-top: 1px solid rgba(45, 90, 61, 0.12);
}

.portal-feature:first-child { border-top: none; padding-top: 0; }

.portal-feature-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--portal-radius);
    display: grid;
    place-items: center;
    font-size: 1.1rem;
    color: var(--portal-primary);
    background: var(--portal-surface);
    border: 1px solid var(--portal-border);
    flex-shrink: 0;
}

.portal-feature strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--portal-text);
    margin-bottom: 0.15rem;
}

.portal-feature small {
    color: var(--portal-text-muted);
    font-size: 0.82rem;
    line-height: 1.45;
}

.portal-card {
    padding: 2.5rem 2rem;
    background: var(--portal-surface);
}

.portal-card-header {
    margin-bottom: 1.75rem;
}

.portal-logo-ring {
    width: 48px;
    height: 48px;
    margin: 0 0 1.25rem;
    border-radius: var(--portal-radius);
    display: grid;
    place-items: center;
    background: var(--portal-bg);
    border: 1px solid var(--portal-border);
}

.portal-logo-ring img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.portal-card-header h2 {
    margin: 0 0 0.35rem;
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--portal-text);
}

.portal-card-header p {
    margin: 0;
    color: var(--portal-text-muted);
    font-size: 0.9rem;
}

.portal-field {
    margin-bottom: 1rem;
}

.portal-field label {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--portal-text-secondary);
}

.portal-input-wrap {
    position: relative;
}

.portal-input-wrap i.field-icon {
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--portal-text-muted);
    font-size: 1.05rem;
    pointer-events: none;
}

.portal-input-wrap input {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 2.5rem;
    border-radius: var(--portal-radius);
    border: 1px solid var(--portal-border-strong);
    background: var(--portal-surface);
    color: var(--portal-text);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.portal-input-wrap input::placeholder {
    color: #9ca3af;
}

.portal-input-wrap input:focus {
    border-color: var(--portal-primary);
    box-shadow: 0 0 0 3px rgba(31, 41, 55, 0.08);
}

.portal-input-wrap .toggle-password {
    position: absolute;
    right: 0.65rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--portal-text-muted);
    text-decoration: none;
    padding: 0.25rem;
}

.portal-input-wrap .toggle-password:hover {
    color: var(--portal-text);
}

.portal-submit {
    width: 100%;
    margin-top: 0.35rem;
    padding: 0.8rem 1.25rem;
    border: 1px solid var(--portal-primary);
    border-radius: var(--portal-radius);
    font-family: inherit;
    font-size: 0.925rem;
    font-weight: 600;
    color: #ffffff;
    cursor: pointer;
    background: var(--portal-primary);
    transition: background 0.15s, border-color 0.15s;
}

.portal-submit:hover:not(:disabled) {
    background: var(--portal-primary-hover);
    border-color: var(--portal-primary-hover);
}

.portal-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    animation: btnSpin 0.65s linear infinite;
    vertical-align: -0.15em;
    margin-right: 0.4rem;
}

@keyframes btnSpin {
    to { transform: rotate(360deg); }
}

.portal-footer {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--portal-border);
    text-align: center;
}

.portal-footer small {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--portal-text-muted);
    font-size: 0.78rem;
}

.portal-footer i {
    color: var(--portal-text-muted);
}

@media (max-width: 860px) {
    .portal-shell {
        grid-template-columns: 1fr;
        max-width: 420px;
    }

    .portal-showcase {
        display: none;
    }

    .portal-card {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .portal-scene {
        padding: 1rem;
    }

    .portal-shell {
        border: none;
        box-shadow: none;
        background: transparent;
    }

    .portal-card {
        padding: 1.5rem 0;
        background: transparent;
    }
}