/* Standalone auth pages (login / forgot-password) in shell SPA preview.
   Ported 1:1 from legacy login.html + forgot-password.html <style> blocks.
   Scoped under .zk-auth so it never leaks into the agent shell. */
.zk-auth {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg-primary);
}

.zk-auth .login-container {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-lg);
}

.zk-auth.zk-auth-wide .login-container {
    max-width: 420px;
}

.zk-auth .login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
}

.zk-auth .login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.zk-auth .login-logo {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.zk-auth .login-logo-img {
    display: block;
    width: 6.5rem;
    height: 6.5rem;
    margin: 0 auto var(--spacing-md);
    object-fit: contain;
}

.zk-auth .login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs);
}

.zk-auth .login-subtitle {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.zk-auth .login-form .form-group {
    margin-bottom: var(--spacing-md);
}

.zk-auth .login-form .form-input,
.zk-auth .login-form .totp-input {
    font-size: 16px;
}

.zk-auth .login-form .btn-primary {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
}

.zk-auth .sso-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
    color: var(--text-tertiary);
    font-size: 0.8rem;
}

.zk-auth .sso-divider::before,
.zk-auth .sso-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-primary);
}

.zk-auth .sso-btn {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.zk-auth .login-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-primary);
}

.zk-auth .login-footer a {
    color: var(--color-primary);
    font-size: 0.875rem;
}

.zk-auth .totp-section {
    display: none;
}

.zk-auth .totp-section.show {
    display: block;
}

.zk-auth .totp-input {
    font-size: 1.5rem;
    text-align: center;
    letter-spacing: 0.5em;
    font-family: monospace;
}

.zk-auth .alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
}

.zk-auth .alert-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    border: 1px solid var(--color-danger);
}

.zk-auth .alert-success {
    background: var(--color-success-bg, rgba(63, 185, 80, .12));
    color: var(--color-success, #3fb950);
    border: 1px solid var(--color-success, #3fb950);
}

.zk-auth .remember-me {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.zk-auth .remember-me a {
    color: var(--color-primary);
    font-size: 0.875rem;
    text-decoration: none;
}

.zk-auth .form-checkbox input[type="checkbox"],
.zk-auth .remember-me input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-primary, #30363d);
    border-radius: 4px;
    background: var(--bg-primary) !important;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: border-color 0.15s ease, background 0.15s ease;
    margin: 0;
    accent-color: unset;
}

.zk-auth .form-checkbox input[type="checkbox"]:checked,
.zk-auth .remember-me input[type="checkbox"]:checked {
    background: var(--color-primary, #1f6feb) !important;
    border-color: var(--color-primary, #1f6feb);
}

.zk-auth .form-checkbox input[type="checkbox"]:checked::after,
.zk-auth .remember-me input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    line-height: 1;
}

.zk-auth .form-checkbox input[type="checkbox"]:hover,
.zk-auth .remember-me input[type="checkbox"]:hover {
    border-color: var(--text-secondary, #8b949e);
}

.zk-auth .form-checkbox {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* forgot-password wizard steps + footer overrides */
.zk-auth .login-subtitle-block {
    margin: 0 0 var(--spacing-lg);
}

.zk-auth .form-input {
    width: 100%;
}

.zk-auth .step {
    display: none;
}

.zk-auth .step.active {
    display: block;
}

.zk-auth.zk-auth-wide .login-footer {
    border-top: none;
    padding-top: 0;
}