/* ============================================================================
   Admin Panel — Full-screen overlay for Workspace Administration
   Phase 5: User Management + Network (Infrastructure Endpoints)
   ============================================================================ */

/* Overlay container */
.admin-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-index-modal);
    background: var(--color-bg-primary);
    display: none;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.admin-overlay--visible {
    display: flex;
    opacity: 1;
}

/* Layout: sidebar nav + content area */
.admin-layout {
    display: flex;
    width: 100%;
    height: 100%;
}

/* Left navigation sidebar */
.admin-nav {
    width: 240px;
    min-width: 240px;
    background: var(--color-bg-secondary);
    border-right: var(--border-width-thin) solid var(--color-border-primary);
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg) 0;
}

.admin-nav__header {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: var(--border-width-thin) solid var(--color-border-primary);
    margin-bottom: var(--spacing-md);
}

.admin-nav__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.admin-nav__items {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: 0 var(--spacing-sm);
}

.admin-nav__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    cursor: pointer;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    text-align: left;
    width: 100%;
}

.admin-nav__item:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.admin-nav__item--active {
    background: rgba(102, 126, 234, 0.15);
    color: var(--color-accent-primary);
    font-weight: var(--font-weight-medium);
}

.admin-nav__icon {
    font-size: var(--font-size-lg);
    width: 24px;
    text-align: center;
}

.admin-nav__footer {
    padding: var(--spacing-lg) var(--spacing-sm);
    border-top: var(--border-width-thin) solid var(--color-border-primary);
    margin-top: auto;
}

.admin-nav__close {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    cursor: pointer;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    width: 100%;
    text-align: left;
}

.admin-nav__close:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

/* Content area */
.admin-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-2xl) var(--spacing-3xl);
}

.admin-section {
    display: none;
}

.admin-section--active {
    display: block;
}

.admin-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

.admin-section__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

/* Users table */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-lg);
}

.admin-table th {
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: var(--border-width-medium) solid var(--color-border-primary);
}

.admin-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    border-bottom: var(--border-width-thin) solid var(--color-border-primary);
}

.admin-table tr:hover td {
    background: var(--color-bg-hover);
}

/* Role badge */
.admin-role-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.admin-role-badge--owner {
    background: rgba(102, 126, 234, 0.2);
    color: var(--color-accent-primary);
}

.admin-role-badge--admin {
    background: rgba(255, 152, 0, 0.2);
    color: var(--color-warning);
}

.admin-role-badge--member {
    background: rgba(76, 175, 80, 0.15);
    color: var(--color-success);
}

/* Status indicator */
.admin-status {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.admin-status__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.admin-status__dot--active {
    background: var(--color-success);
}

.admin-status__dot--inactive {
    background: var(--color-error);
}

/* Action buttons in table rows */
.admin-table__actions {
    display: flex;
    gap: var(--spacing-xs);
}

.admin-table__actions button {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: var(--border-width-thin) solid var(--color-border-primary);
    background: transparent;
    color: var(--color-text-secondary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: var(--font-size-xs);
    transition: all var(--transition-fast);
}

.admin-table__actions button:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.admin-table__actions button.danger:hover {
    background: rgba(244, 67, 54, 0.15);
    color: var(--color-error);
}

/* Add user button */
.admin-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    color: #fff;
    border: none;
    border-radius: var(--border-radius-md);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.admin-btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Add user form (inline card) */
.admin-add-user-card {
    background: var(--color-bg-secondary);
    border: var(--border-width-thin) solid var(--color-border-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    display: none;
}

.admin-add-user-card--visible {
    display: block;
    animation: adminSlideDown 0.2s ease;
}

@keyframes adminSlideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.admin-add-user-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.admin-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.admin-form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.admin-form-group label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.admin-form-group input,
.admin-form-group select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-primary);
    border: var(--border-width-thin) solid var(--color-border-primary);
    border-radius: var(--border-radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.admin-form-group input:focus,
.admin-form-group select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

/* Password field with toggle */
.admin-password-wrapper {
    display: flex;
    position: relative;
}

.admin-password-wrapper input {
    flex: 1;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.admin-password-toggle {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border: var(--border-width-thin) solid var(--color-border-primary);
    border-left: none;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.admin-password-toggle:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.admin-password-mismatch {
    font-size: var(--font-size-xs);
    color: var(--color-error);
    font-weight: var(--font-weight-medium);
}

.admin-form-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

.admin-btn-secondary {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    color: var(--color-text-secondary);
    border: var(--border-width-thin) solid var(--color-border-primary);
    border-radius: var(--border-radius-md);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.admin-btn-secondary:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

/* Empty state */
.admin-empty {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-text-tertiary);
}

.admin-empty__icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.admin-empty__text {
    font-size: var(--font-size-base);
}

/* Notification toast */
.admin-toast {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--color-success);
    color: #fff;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    z-index: calc(var(--z-index-modal) + 1);
    animation: adminToastIn 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.admin-toast--error {
    background: var(--color-error);
}

@keyframes adminToastIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Security card (HITL toggle) */
.admin-security-card {
    background: var(--color-bg-secondary);
    border: var(--border-width-thin) solid var(--color-border-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    transition: border-color var(--transition-base);
}

.admin-security-card--disabled {
    border-color: rgba(255, 152, 0, 0.4);
}

.admin-security-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.admin-security-card__info {
    flex: 1;
}

.admin-security-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.admin-security-card__desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.admin-security-card__status {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: var(--border-width-thin) solid var(--color-border-primary);
}

.admin-security-card__badge {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    padding: 2px 10px;
    border-radius: var(--border-radius-full);
}

.admin-security-card__badge--active {
    color: var(--color-success);
    background: rgba(76, 175, 80, 0.15);
}

.admin-security-card__badge--disabled {
    color: var(--color-warning);
    background: rgba(255, 152, 0, 0.15);
}

.admin-security-card__hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.admin-security-card__warning {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 152, 0, 0.08);
    border: var(--border-width-thin) solid rgba(255, 152, 0, 0.3);
    border-radius: var(--border-radius-md);
    color: var(--color-warning);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

/* Toggle switch */
.admin-toggle {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
    flex-shrink: 0;
}

.admin-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.admin-toggle__slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--color-bg-tertiary);
    border: var(--border-width-thin) solid var(--color-border-primary);
    border-radius: var(--border-radius-full);
    transition: all var(--transition-base);
}

.admin-toggle__slider::before {
    content: "";
    position: absolute;
    height: 20px;
    width: 20px;
    left: 2px;
    bottom: 2px;
    background: var(--color-text-secondary);
    border-radius: 50%;
    transition: all var(--transition-base);
}

.admin-toggle input:checked + .admin-toggle__slider {
    background: rgba(76, 175, 80, 0.2);
    border-color: var(--color-success);
}

.admin-toggle input:checked + .admin-toggle__slider::before {
    background: var(--color-success);
    transform: translateX(22px);
}

.admin-toggle input:disabled + .admin-toggle__slider {
    opacity: 0.5;
    cursor: not-allowed;
}