.auth-shell {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    background: #f7f9f5;
    min-height: calc(100vh - 420px);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: #fff;
    border-radius: var(--ug-radius-lg, 20px);
    box-shadow: var(--ug-shadow-lg, 0 20px 48px rgba(20, 30, 20, .14));
    border: 1px solid #eef1ea;
    padding: 40px 36px;
}

.auth-card__header {
    text-align: center;
    margin-bottom: 28px;
}

.auth-card__title {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 6px;
}

.auth-card__subtitle {
    font-size: 14px;
    color: #6b7280;
    margin: 0;
}

.auth-field {
    margin-bottom: 18px;
}

.auth-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #333;
    margin-bottom: 6px;
}

.auth-input {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--ug-radius-sm, 10px);
    border: 1.5px solid #e2e5e0;
    font-size: 14px;
    font-family: inherit;
    color: #1a1a1a;
    background: #fff;
    transition: var(--ug-transition, all .25s ease);
}

.auth-input::placeholder {
    color: #a3a9a0;
}

.auth-input:focus {
    outline: none;
    border-color: #87b942;
    box-shadow: var(--ug-focus-ring, 0 0 0 4px rgba(135, 185, 66, .18));
}

.auth-input.is-invalid {
    border-color: #e53935;
}

.auth-input[readonly] {
    background: #f5f6f4;
    color: #777;
}

select.auth-input {
    cursor: pointer;
}

.auth-error {
    display: none;
    color: #e53935;
    font-size: 12px;
    margin-top: 6px;
}

.auth-alert {
    display: none;
    border-radius: var(--ug-radius-sm, 10px);
    font-size: 13px;
    padding: 12px 16px;
    margin-bottom: 18px;
}

.auth-alert.alert-success {
    background: #f0fbf3;
    color: #1e8e3e;
    border: 1px solid #cdeed7;
}

.auth-alert.alert-danger {
    background: #fdf1f0;
    color: #c62828;
    border: 1px solid #f5cfcb;
}

.auth-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 13px 18px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: var(--ug-transition, all .25s ease);
    font-family: inherit;
}

.auth-btn-primary {
    background: #87b942;
    color: #fff;
    border-color: #87b942;
    box-shadow: 0 2px 10px rgba(135, 185, 66, .28);
}

.auth-btn-primary:hover:not(:disabled) {
    background: #74a336;
    border-color: #74a336;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(135, 185, 66, .38);
}

.auth-btn-primary:disabled {
    opacity: .7;
    cursor: not-allowed;
    transform: none;
}

.auth-links {
    text-align: center;
    font-size: 13.5px;
    color: #555;
    margin-top: 4px;
}

.auth-links a {
    color: #87b942;
    font-weight: 600;
    text-decoration: none;
}

.auth-links a:hover {
    text-decoration: underline;
}

.auth-tabs {
    display: flex;
    background: #f1f3ee;
    border-radius: 999px;
    padding: 4px;
    margin-bottom: 24px;
}

.auth-tab {
    flex: 1;
    text-align: center;
    padding: 10px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    color: #6b7280;
    text-decoration: none;
    transition: var(--ug-transition, all .25s ease);
}

.auth-tab:hover {
    color: #1a1a1a;
}

.auth-tab.active {
    background: #fff;
    color: #1a1a1a;
    box-shadow: var(--ug-shadow-xs, 0 1px 3px rgba(20, 30, 20, .06));
}

.auth-otp-meta {
    font-size: 13px;
    color: #6b7280;
    margin-top: 8px;
}

.auth-otp-meta a {
    color: #87b942;
    font-weight: 600;
    text-decoration: none;
}

.auth-otp-meta a.disabled {
    color: #b7c9a0;
    pointer-events: none;
}

@media (max-width: 480px) {
    .auth-card {
        padding: 32px 22px;
    }
}