/* Admin Panel Styles */

.admin-container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 2rem;
}

.admin-header {
    text-align: center;
    margin-bottom: 3rem;
}

.admin-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.admin-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.back-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.back-link:hover {
    text-decoration: underline;
}

.invite-section,
.invitations-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 2rem;
    margin-bottom: 2rem;
}

.invite-section h2,
.invitations-section h2 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.input-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 1rem;
    background: var(--bg-color);
    color: var(--text-primary);
    box-sizing: border-box;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-primary {
    width: 100%;
    padding: 0.875rem;
    background: #1e40af;
    color: white;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-weight: 500;
    font-size: 1rem;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.status-message {
    margin-top: 1rem;
    padding: 0;
    border-radius: 0.375rem;
    font-size: 0.9375rem;
}

.status-message.success {
    padding: 0.75rem;
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.status-message.error {
    padding: 0.75rem;
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.filter-tab {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: transparent;
    border-radius: 0.375rem;
    cursor: pointer;
    color: var(--text-primary);
    font-weight: 500;
}

.filter-tab:hover {
    background: var(--bg-color);
}

.filter-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.invitations-list {
    min-height: 200px;
}

.invitation-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    margin-bottom: 0.75rem;
    background: var(--bg-color);
}

.invitation-card.accepted {
    border-left: 4px solid #28a745;
}

.invitation-card.pending {
    border-left: 4px solid #ffc107;
}

.invitation-info {
    flex: 1;
}

.email {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
}

.meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.status-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-pending {
    background: #fff3cd;
    color: #856404;
}

.status-accepted {
    background: #d4edda;
    color: #155724;
}

.user-info {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: #28a745;
}

.invitation-actions {
    margin-left: 1rem;
}

.btn-resend {
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-weight: 500;
}

.btn-resend:hover {
    opacity: 0.9;
}

.empty-state,
.loading,
.error-state {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.error-state {
    color: #721c24;
}

/* View Tabs */
.view-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.view-tab {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1rem;
    margin-bottom: -2px;
    transition: all 0.2s;
}

.view-tab:hover {
    color: var(--text-primary);
}

.view-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* User Management Section */
.users-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 2rem;
}

.users-section h2 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.section-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.9375rem;
}

.users-list {
    min-height: 200px;
}

.user-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    margin-bottom: 0.75rem;
    background: var(--bg-color);
    transition: border-color 0.2s;
}

.user-card:hover {
    border-color: var(--primary-color);
}

.user-header {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 0.75rem;
}

.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.125rem;
    color: white;
    flex-shrink: 0;
}

.user-details {
    flex: 1;
}

.user-name {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.user-username {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.125rem;
}

.user-email {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.user-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.admin-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    background: #1e40af;
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.task-count {
    font-weight: 500;
}

.user-actions {
    margin-left: 1rem;
}

.btn-delete {
    padding: 0.5rem 1rem;
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: opacity 0.2s;
}

.btn-delete:hover {
    opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
    .admin-container {
        padding: 1rem;
    }

    .invitation-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .invitation-actions {
        margin-left: 0;
        margin-top: 1rem;
        width: 100%;
    }

    .btn-resend {
        width: 100%;
    }

    .meta {
        flex-direction: column;
        gap: 0.5rem;
    }

    .user-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .user-actions {
        margin-left: 0;
        margin-top: 1rem;
        width: 100%;
    }

    .btn-delete {
        width: 100%;
    }

    .view-tabs {
        gap: 0.25rem;
    }

    .view-tab {
        padding: 0.5rem 1rem;
        font-size: 0.9375rem;
    }
}